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Finding the Fourth Proportional to 71,540,267.86, 98,746,978.79 and 41,778,943.88

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Solution

The fourth proportional to 71,540,267.86, 98,746,978.79 and 41,778,943.88 is: 57,667,445.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,540,267.86 : 98,746,978.79 = 41,778,943.88 : x
  2. Step 2: Convert to fraction form
    71,540,267.86/98,746,978.79 = 41,778,943.88/x
  3. Step 3: Cross multiply
    71,540,267.86x = 98,746,978.79 × 41,778,943.88
  4. Step 4: Simplify right side
    71,540,267.86x = 4,125,544,484,797,673
  5. Step 5: Solve for x
    x = 4,125,544,484,797,673/71,540,267.86
  6. Step 6: Final answer
    x = 57,667,445.32

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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.