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Finding the Fourth Proportional to 74,762.67, 112,337.87 and 56,217.45

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Solution

The fourth proportional to 74,762.67, 112,337.87 and 56,217.45 is: 84,471.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,762.67 : 112,337.87 = 56,217.45 : x
  2. Step 2: Convert to fraction form
    74,762.67/112,337.87 = 56,217.45/x
  3. Step 3: Cross multiply
    74,762.67x = 112,337.87 × 56,217.45
  4. Step 4: Simplify right side
    74,762.67x = 6,315,348,308.74
  5. Step 5: Solve for x
    x = 6,315,348,308.74/74,762.67
  6. Step 6: Final answer
    x = 84,471.95

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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.