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Finding the Fourth Proportional to 105,468.80, 158,203.20 and 43,124.72

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Solution

The fourth proportional to 105,468.80, 158,203.20 and 43,124.72 is: 64,687.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,468.80 : 158,203.20 = 43,124.72 : x
  2. Step 2: Convert to fraction form
    105,468.80/158,203.20 = 43,124.72/x
  3. Step 3: Cross multiply
    105,468.80x = 158,203.20 × 43,124.72
  4. Step 4: Simplify right side
    105,468.80x = 6,822,468,703.10
  5. Step 5: Solve for x
    x = 6,822,468,703.10/105,468.80
  6. Step 6: Final answer
    x = 64,687.08

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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.