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Finding the Fourth Proportional to 99,856,277.80, 149,784,416.70 and 61,393,071.40

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Solution

The fourth proportional to 99,856,277.80, 149,784,416.70 and 61,393,071.40 is: 92,089,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,856,277.80 : 149,784,416.70 = 61,393,071.40 : x
  2. Step 2: Convert to fraction form
    99,856,277.80/149,784,416.70 = 61,393,071.40/x
  3. Step 3: Cross multiply
    99,856,277.80x = 149,784,416.70 × 61,393,071.40
  4. Step 4: Simplify right side
    99,856,277.80x = 9,195,725,389,070,452
  5. Step 5: Solve for x
    x = 9,195,725,389,070,452/99,856,277.80
  6. Step 6: Final answer
    x = 92,089,607.10

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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.