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Finding the Fourth Proportional to 521,104.36, 719,123.70 and 282,640.36

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Solution

The fourth proportional to 521,104.36, 719,123.70 and 282,640.36 is: 390,043.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,104.36 : 719,123.70 = 282,640.36 : x
  2. Step 2: Convert to fraction form
    521,104.36/719,123.70 = 282,640.36/x
  3. Step 3: Cross multiply
    521,104.36x = 719,123.70 × 282,640.36
  4. Step 4: Simplify right side
    521,104.36x = 203,253,381,452.53
  5. Step 5: Solve for x
    x = 203,253,381,452.53/521,104.36
  6. Step 6: Final answer
    x = 390,043.52

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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.