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Finding the Fourth Proportional to 80,700.48, 121,070.16 and 25,296.48

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Solution

The fourth proportional to 80,700.48, 121,070.16 and 25,296.48 is: 37,950.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,700.48 : 121,070.16 = 25,296.48 : x
  2. Step 2: Convert to fraction form
    80,700.48/121,070.16 = 25,296.48/x
  3. Step 3: Cross multiply
    80,700.48x = 121,070.16 × 25,296.48
  4. Step 4: Simplify right side
    80,700.48x = 3,062,648,881.04
  5. Step 5: Solve for x
    x = 3,062,648,881.04/80,700.48
  6. Step 6: Final answer
    x = 37,950.81

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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.