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Finding the Fourth Proportional to 82,785.61, 124,202.61 and 26,624.46

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Solution

The fourth proportional to 82,785.61, 124,202.61 and 26,624.46 is: 39,944.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,785.61 : 124,202.61 = 26,624.46 : x
  2. Step 2: Convert to fraction form
    82,785.61/124,202.61 = 26,624.46/x
  3. Step 3: Cross multiply
    82,785.61x = 124,202.61 × 26,624.46
  4. Step 4: Simplify right side
    82,785.61x = 3,306,827,421.84
  5. Step 5: Solve for x
    x = 3,306,827,421.84/82,785.61
  6. Step 6: Final answer
    x = 39,944.47

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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.