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Finding the Fourth Proportional to 79,276.65, 118,931.18 and 26,691.45

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Solution

The fourth proportional to 79,276.65, 118,931.18 and 26,691.45 is: 40,042.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,276.65 : 118,931.18 = 26,691.45 : x
  2. Step 2: Convert to fraction form
    79,276.65/118,931.18 = 26,691.45/x
  3. Step 3: Cross multiply
    79,276.65x = 118,931.18 × 26,691.45
  4. Step 4: Simplify right side
    79,276.65x = 3,174,445,510.95
  5. Step 5: Solve for x
    x = 3,174,445,510.95/79,276.65
  6. Step 6: Final answer
    x = 40,042.63

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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.