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Finding the Fourth Proportional to 90,442.76, 124,818.90 and 52,716.20

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Solution

The fourth proportional to 90,442.76, 124,818.90 and 52,716.20 is: 72,752.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,442.76 : 124,818.90 = 52,716.20 : x
  2. Step 2: Convert to fraction form
    90,442.76/124,818.90 = 52,716.20/x
  3. Step 3: Cross multiply
    90,442.76x = 124,818.90 × 52,716.20
  4. Step 4: Simplify right side
    90,442.76x = 6,579,978,096.18
  5. Step 5: Solve for x
    x = 6,579,978,096.18/90,442.76
  6. Step 6: Final answer
    x = 72,752.96

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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.