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Finding the Fourth Proportional to 99,856,285.30, 149,784,427.95 and 61,393,078.90

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Solution

The fourth proportional to 99,856,285.30, 149,784,427.95 and 61,393,078.90 is: 92,089,618.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,856,285.30 : 149,784,427.95 = 61,393,078.90 : x
  2. Step 2: Convert to fraction form
    99,856,285.30/149,784,427.95 = 61,393,078.90/x
  3. Step 3: Cross multiply
    99,856,285.30x = 149,784,427.95 × 61,393,078.90
  4. Step 4: Simplify right side
    99,856,285.30x = 9,195,727,203,125,714
  5. Step 5: Solve for x
    x = 9,195,727,203,125,714/99,856,285.30
  6. Step 6: Final answer
    x = 92,089,618.35

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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.