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Finding the Fourth Proportional to 113,246.80, 169,888.62 and 42,169.70

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Solution

The fourth proportional to 113,246.80, 169,888.62 and 42,169.70 is: 63,261.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,246.80 : 169,888.62 = 42,169.70 : x
  2. Step 2: Convert to fraction form
    113,246.80/169,888.62 = 42,169.70/x
  3. Step 3: Cross multiply
    113,246.80x = 169,888.62 × 42,169.70
  4. Step 4: Simplify right side
    113,246.80x = 7,164,152,138.81
  5. Step 5: Solve for x
    x = 7,164,152,138.81/113,246.80
  6. Step 6: Final answer
    x = 63,261.41

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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.