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Finding the Fourth Proportional to 717,194.49, 989,750.18 and 394,916.12

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Solution

The fourth proportional to 717,194.49, 989,750.18 and 394,916.12 is: 544,996.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,194.49 : 989,750.18 = 394,916.12 : x
  2. Step 2: Convert to fraction form
    717,194.49/989,750.18 = 394,916.12/x
  3. Step 3: Cross multiply
    717,194.49x = 989,750.18 × 394,916.12
  4. Step 4: Simplify right side
    717,194.49x = 390,868,300,854.90
  5. Step 5: Solve for x
    x = 390,868,300,854.90/717,194.49
  6. Step 6: Final answer
    x = 544,996.24

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.