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Finding the Fourth Proportional to 124,761.63, 187,092.63 and 72,208.02

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Solution

The fourth proportional to 124,761.63, 187,092.63 and 72,208.02 is: 108,283.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,761.63 : 187,092.63 = 72,208.02 : x
  2. Step 2: Convert to fraction form
    124,761.63/187,092.63 = 72,208.02/x
  3. Step 3: Cross multiply
    124,761.63x = 187,092.63 × 72,208.02
  4. Step 4: Simplify right side
    124,761.63x = 13,509,588,368.89
  5. Step 5: Solve for x
    x = 13,509,588,368.89/124,761.63
  6. Step 6: Final answer
    x = 108,283.20

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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.