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Finding the Fourth Proportional to 48,710.60, 72,920.10 and 43,461.80

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Solution

The fourth proportional to 48,710.60, 72,920.10 and 43,461.80 is: 65,062.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,710.60 : 72,920.10 = 43,461.80 : x
  2. Step 2: Convert to fraction form
    48,710.60/72,920.10 = 43,461.80/x
  3. Step 3: Cross multiply
    48,710.60x = 72,920.10 × 43,461.80
  4. Step 4: Simplify right side
    48,710.60x = 3,169,238,802.18
  5. Step 5: Solve for x
    x = 3,169,238,802.18/48,710.60
  6. Step 6: Final answer
    x = 65,062.61

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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.