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Finding the Fourth Proportional to 83,437.70, 124,412.27 and 74,164.82

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Solution

The fourth proportional to 83,437.70, 124,412.27 and 74,164.82 is: 110,585.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,437.70 : 124,412.27 = 74,164.82 : x
  2. Step 2: Convert to fraction form
    83,437.70/124,412.27 = 74,164.82/x
  3. Step 3: Cross multiply
    83,437.70x = 124,412.27 × 74,164.82
  4. Step 4: Simplify right side
    83,437.70x = 9,227,013,610.34
  5. Step 5: Solve for x
    x = 9,227,013,610.34/83,437.70
  6. Step 6: Final answer
    x = 110,585.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.