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Finding the Fourth Proportional to 65,217,701.80, 97,814,111.10 and 19,780,978.60

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Solution

The fourth proportional to 65,217,701.80, 97,814,111.10 and 19,780,978.60 is: 29,667,694.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,217,701.80 : 97,814,111.10 = 19,780,978.60 : x
  2. Step 2: Convert to fraction form
    65,217,701.80/97,814,111.10 = 19,780,978.60/x
  3. Step 3: Cross multiply
    65,217,701.80x = 97,814,111.10 × 19,780,978.60
  4. Step 4: Simplify right side
    65,217,701.80x = 1,934,858,838,447,122.50
  5. Step 5: Solve for x
    x = 1,934,858,838,447,122.50/65,217,701.80
  6. Step 6: Final answer
    x = 29,667,694.28

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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.