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Finding the Fourth Proportional to 105,044.80, 157,567.20 and 71,867.20

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Solution

The fourth proportional to 105,044.80, 157,567.20 and 71,867.20 is: 107,800.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,044.80 : 157,567.20 = 71,867.20 : x
  2. Step 2: Convert to fraction form
    105,044.80/157,567.20 = 71,867.20/x
  3. Step 3: Cross multiply
    105,044.80x = 157,567.20 × 71,867.20
  4. Step 4: Simplify right side
    105,044.80x = 11,323,913,475.84
  5. Step 5: Solve for x
    x = 11,323,913,475.84/105,044.80
  6. Step 6: Final answer
    x = 107,800.80

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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.