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Finding the Fourth Proportional to 118,108.01, 162,948.16 and 75,689.93

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Solution

The fourth proportional to 118,108.01, 162,948.16 and 75,689.93 is: 104,425.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,108.01 : 162,948.16 = 75,689.93 : x
  2. Step 2: Convert to fraction form
    118,108.01/162,948.16 = 75,689.93/x
  3. Step 3: Cross multiply
    118,108.01x = 162,948.16 × 75,689.93
  4. Step 4: Simplify right side
    118,108.01x = 12,333,534,824.03
  5. Step 5: Solve for x
    x = 12,333,534,824.03/118,108.01
  6. Step 6: Final answer
    x = 104,425.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.