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Finding the Fourth Proportional to 72,248.93, 108,373.55 and 38,984.66

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Solution

The fourth proportional to 72,248.93, 108,373.55 and 38,984.66 is: 58,477.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,248.93 : 108,373.55 = 38,984.66 : x
  2. Step 2: Convert to fraction form
    72,248.93/108,373.55 = 38,984.66/x
  3. Step 3: Cross multiply
    72,248.93x = 108,373.55 × 38,984.66
  4. Step 4: Simplify right side
    72,248.93x = 4,224,905,262.95
  5. Step 5: Solve for x
    x = 4,224,905,262.95/72,248.93
  6. Step 6: Final answer
    x = 58,477.07

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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.