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Finding the Fourth Proportional to 733,872.40, 1,028,121.20 and 733,872.40

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Solution

The fourth proportional to 733,872.40, 1,028,121.20 and 733,872.40 is: 1,028,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    733,872.40 : 1,028,121.20 = 733,872.40 : x
  2. Step 2: Convert to fraction form
    733,872.40/1,028,121.20 = 733,872.40/x
  3. Step 3: Cross multiply
    733,872.40x = 1,028,121.20 × 733,872.40
  4. Step 4: Simplify right side
    733,872.40x = 754,509,772,534.88
  5. Step 5: Solve for x
    x = 754,509,772,534.88/733,872.40
  6. Step 6: Final answer
    x = 1,028,121.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.