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Finding the Fourth Proportional to 72,448.46, 108,690.42 and 58,534.55

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Solution

The fourth proportional to 72,448.46, 108,690.42 and 58,534.55 is: 87,816.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,448.46 : 108,690.42 = 58,534.55 : x
  2. Step 2: Convert to fraction form
    72,448.46/108,690.42 = 58,534.55/x
  3. Step 3: Cross multiply
    72,448.46x = 108,690.42 × 58,534.55
  4. Step 4: Simplify right side
    72,448.46x = 6,362,144,824.01
  5. Step 5: Solve for x
    x = 6,362,144,824.01/72,448.46
  6. Step 6: Final answer
    x = 87,816.15

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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.