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Finding the Fourth Proportional to 92,125.80, 127,123.29 and 51,838.70

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Solution

The fourth proportional to 92,125.80, 127,123.29 and 51,838.70 is: 71,531.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,125.80 : 127,123.29 = 51,838.70 : x
  2. Step 2: Convert to fraction form
    92,125.80/127,123.29 = 51,838.70/x
  3. Step 3: Cross multiply
    92,125.80x = 127,123.29 × 51,838.70
  4. Step 4: Simplify right side
    92,125.80x = 6,589,905,457.71
  5. Step 5: Solve for x
    x = 6,589,905,457.71/92,125.80
  6. Step 6: Final answer
    x = 71,531.60

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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.