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Finding the Fourth Proportional to 117,876.68, 162,690.90 and 75,433.76

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Solution

The fourth proportional to 117,876.68, 162,690.90 and 75,433.76 is: 104,112.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,876.68 : 162,690.90 = 75,433.76 : x
  2. Step 2: Convert to fraction form
    117,876.68/162,690.90 = 75,433.76/x
  3. Step 3: Cross multiply
    117,876.68x = 162,690.90 × 75,433.76
  4. Step 4: Simplify right side
    117,876.68x = 12,272,386,304.78
  5. Step 5: Solve for x
    x = 12,272,386,304.78/117,876.68
  6. Step 6: Final answer
    x = 104,112.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.