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Finding the Fourth Proportional to 480,705.36, 721,002.96 and 125,753.64

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Solution

The fourth proportional to 480,705.36, 721,002.96 and 125,753.64 is: 188,616.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,705.36 : 721,002.96 = 125,753.64 : x
  2. Step 2: Convert to fraction form
    480,705.36/721,002.96 = 125,753.64/x
  3. Step 3: Cross multiply
    480,705.36x = 721,002.96 × 125,753.64
  4. Step 4: Simplify right side
    480,705.36x = 90,668,746,670.77
  5. Step 5: Solve for x
    x = 90,668,746,670.77/480,705.36
  6. Step 6: Final answer
    x = 188,616.05

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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.