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Finding the Fourth Proportional to 986,753.20, 1,480,129.80 and 986,753.20

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Solution

The fourth proportional to 986,753.20, 1,480,129.80 and 986,753.20 is: 1,480,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,753.20 : 1,480,129.80 = 986,753.20 : x
  2. Step 2: Convert to fraction form
    986,753.20/1,480,129.80 = 986,753.20/x
  3. Step 3: Cross multiply
    986,753.20x = 1,480,129.80 × 986,753.20
  4. Step 4: Simplify right side
    986,753.20x = 1,460,522,816,565.36
  5. Step 5: Solve for x
    x = 1,460,522,816,565.36/986,753.20
  6. Step 6: Final answer
    x = 1,480,129.80

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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.