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Finding the Fourth Proportional to 734,711.10, 1,101,807.45 and 261,411.90

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Solution

The fourth proportional to 734,711.10, 1,101,807.45 and 261,411.90 is: 392,025.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    734,711.10 : 1,101,807.45 = 261,411.90 : x
  2. Step 2: Convert to fraction form
    734,711.10/1,101,807.45 = 261,411.90/x
  3. Step 3: Cross multiply
    734,711.10x = 1,101,807.45 × 261,411.90
  4. Step 4: Simplify right side
    734,711.10x = 288,025,578,938.66
  5. Step 5: Solve for x
    x = 288,025,578,938.66/734,711.10
  6. Step 6: Final answer
    x = 392,025.63

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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.