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Finding the Fourth Proportional to 72,480.93, 108,724.80 and 59,807.16

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Solution

The fourth proportional to 72,480.93, 108,724.80 and 59,807.16 is: 89,713.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,480.93 : 108,724.80 = 59,807.16 : x
  2. Step 2: Convert to fraction form
    72,480.93/108,724.80 = 59,807.16/x
  3. Step 3: Cross multiply
    72,480.93x = 108,724.80 × 59,807.16
  4. Step 4: Simplify right side
    72,480.93x = 6,502,521,509.57
  5. Step 5: Solve for x
    x = 6,502,521,509.57/72,480.93
  6. Step 6: Final answer
    x = 89,713.55

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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.