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Finding the Fourth Proportional to 67,157,177.60, 100,735,766.40 and 61,782,406.40

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Solution

The fourth proportional to 67,157,177.60, 100,735,766.40 and 61,782,406.40 is: 92,673,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,157,177.60 : 100,735,766.40 = 61,782,406.40 : x
  2. Step 2: Convert to fraction form
    67,157,177.60/100,735,766.40 = 61,782,406.40/x
  3. Step 3: Cross multiply
    67,157,177.60x = 100,735,766.40 × 61,782,406.40
  4. Step 4: Simplify right side
    67,157,177.60x = 6,223,698,058,740,265
  5. Step 5: Solve for x
    x = 6,223,698,058,740,265/67,157,177.60
  6. Step 6: Final answer
    x = 92,673,609.60

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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.