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Finding the Fourth Proportional to 652,127.70, 978,191.55 and 403,295.70

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Solution

The fourth proportional to 652,127.70, 978,191.55 and 403,295.70 is: 604,943.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,127.70 : 978,191.55 = 403,295.70 : x
  2. Step 2: Convert to fraction form
    652,127.70/978,191.55 = 403,295.70/x
  3. Step 3: Cross multiply
    652,127.70x = 978,191.55 × 403,295.70
  4. Step 4: Simplify right side
    652,127.70x = 394,500,445,891.34
  5. Step 5: Solve for x
    x = 394,500,445,891.34/652,127.70
  6. Step 6: Final answer
    x = 604,943.55

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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.