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Finding the Fourth Proportional to 56,165,433.60, 78,858,355.20 and 56,165,433.60

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Solution

The fourth proportional to 56,165,433.60, 78,858,355.20 and 56,165,433.60 is: 78,858,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,165,433.60 : 78,858,355.20 = 56,165,433.60 : x
  2. Step 2: Convert to fraction form
    56,165,433.60/78,858,355.20 = 56,165,433.60/x
  3. Step 3: Cross multiply
    56,165,433.60x = 78,858,355.20 × 56,165,433.60
  4. Step 4: Simplify right side
    56,165,433.60x = 4,429,113,712,790,815
  5. Step 5: Solve for x
    x = 4,429,113,712,790,815/56,165,433.60
  6. Step 6: Final answer
    x = 78,858,355.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.