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Finding the Fourth Proportional to 60,894,490.90, 91,341,736.35 and 47,980,474.60

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Solution

The fourth proportional to 60,894,490.90, 91,341,736.35 and 47,980,474.60 is: 71,970,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,894,490.90 : 91,341,736.35 = 47,980,474.60 : x
  2. Step 2: Convert to fraction form
    60,894,490.90/91,341,736.35 = 47,980,474.60/x
  3. Step 3: Cross multiply
    60,894,490.90x = 91,341,736.35 × 47,980,474.60
  4. Step 4: Simplify right side
    60,894,490.90x = 4,382,619,860,861,071.50
  5. Step 5: Solve for x
    x = 4,382,619,860,861,071.50/60,894,490.90
  6. Step 6: Final answer
    x = 71,970,711.90

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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.