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Finding the Fourth Proportional to 72,224.40, 108,247.86 and 40,567.91

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Solution

The fourth proportional to 72,224.40, 108,247.86 and 40,567.91 is: 60,802.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,224.40 : 108,247.86 = 40,567.91 : x
  2. Step 2: Convert to fraction form
    72,224.40/108,247.86 = 40,567.91/x
  3. Step 3: Cross multiply
    72,224.40x = 108,247.86 × 40,567.91
  4. Step 4: Simplify right side
    72,224.40x = 4,391,389,543.59
  5. Step 5: Solve for x
    x = 4,391,389,543.59/72,224.40
  6. Step 6: Final answer
    x = 60,802.02

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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.