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Finding the Fourth Proportional to 526,356.81, 726,378.29 and 284,644.11

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Solution

The fourth proportional to 526,356.81, 726,378.29 and 284,644.11 is: 392,812.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,356.81 : 726,378.29 = 284,644.11 : x
  2. Step 2: Convert to fraction form
    526,356.81/726,378.29 = 284,644.11/x
  3. Step 3: Cross multiply
    526,356.81x = 726,378.29 × 284,644.11
  4. Step 4: Simplify right side
    526,356.81x = 206,759,300,457.15
  5. Step 5: Solve for x
    x = 206,759,300,457.15/526,356.81
  6. Step 6: Final answer
    x = 392,812.06

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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.