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Finding the Fourth Proportional to 85,357,961.60, 117,793,978.26 and 46,199,731.46

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Solution

The fourth proportional to 85,357,961.60, 117,793,978.26 and 46,199,731.46 is: 63,755,624.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,357,961.60 : 117,793,978.26 = 46,199,731.46 : x
  2. Step 2: Convert to fraction form
    85,357,961.60/117,793,978.26 = 46,199,731.46/x
  3. Step 3: Cross multiply
    85,357,961.60x = 117,793,978.26 × 46,199,731.46
  4. Step 4: Simplify right side
    85,357,961.60x = 5,442,050,163,217,078
  5. Step 5: Solve for x
    x = 5,442,050,163,217,078/85,357,961.60
  6. Step 6: Final answer
    x = 63,755,624.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.