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Finding the Fourth Proportional to 657,707.70, 986,561.55 and 236,997.30

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Solution

The fourth proportional to 657,707.70, 986,561.55 and 236,997.30 is: 355,495.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,707.70 : 986,561.55 = 236,997.30 : x
  2. Step 2: Convert to fraction form
    657,707.70/986,561.55 = 236,997.30/x
  3. Step 3: Cross multiply
    657,707.70x = 986,561.55 × 236,997.30
  4. Step 4: Simplify right side
    657,707.70x = 233,812,423,633.82
  5. Step 5: Solve for x
    x = 233,812,423,633.82/657,707.70
  6. Step 6: Final answer
    x = 355,495.95

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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.