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Finding the Fourth Proportional to 657,515.70, 986,273.55 and 608,308.20

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Solution

The fourth proportional to 657,515.70, 986,273.55 and 608,308.20 is: 912,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,515.70 : 986,273.55 = 608,308.20 : x
  2. Step 2: Convert to fraction form
    657,515.70/986,273.55 = 608,308.20/x
  3. Step 3: Cross multiply
    657,515.70x = 986,273.55 × 608,308.20
  4. Step 4: Simplify right side
    657,515.70x = 599,958,287,908.11
  5. Step 5: Solve for x
    x = 599,958,287,908.11/657,515.70
  6. Step 6: Final answer
    x = 912,462.30

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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.