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Finding the Fourth Proportional to 657,705.70, 986,558.55 and 303,411.70

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Solution

The fourth proportional to 657,705.70, 986,558.55 and 303,411.70 is: 455,117.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,705.70 : 986,558.55 = 303,411.70 : x
  2. Step 2: Convert to fraction form
    657,705.70/986,558.55 = 303,411.70/x
  3. Step 3: Cross multiply
    657,705.70x = 986,558.55 × 303,411.70
  4. Step 4: Simplify right side
    657,705.70x = 299,333,406,805.04
  5. Step 5: Solve for x
    x = 299,333,406,805.04/657,705.70
  6. Step 6: Final answer
    x = 455,117.55

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.