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Finding the Fourth Proportional to 60,492.30, 90,738.45 and 57,770.70

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Solution

The fourth proportional to 60,492.30, 90,738.45 and 57,770.70 is: 86,656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,492.30 : 90,738.45 = 57,770.70 : x
  2. Step 2: Convert to fraction form
    60,492.30/90,738.45 = 57,770.70/x
  3. Step 3: Cross multiply
    60,492.30x = 90,738.45 × 57,770.70
  4. Step 4: Simplify right side
    60,492.30x = 5,242,023,773.42
  5. Step 5: Solve for x
    x = 5,242,023,773.42/60,492.30
  6. Step 6: Final answer
    x = 86,656.05

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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.