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Finding the Fourth Proportional to 71,009,999.90, 106,514,999.85 and 40,776,911.90

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Solution

The fourth proportional to 71,009,999.90, 106,514,999.85 and 40,776,911.90 is: 61,165,367.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,009,999.90 : 106,514,999.85 = 40,776,911.90 : x
  2. Step 2: Convert to fraction form
    71,009,999.90/106,514,999.85 = 40,776,911.90/x
  3. Step 3: Cross multiply
    71,009,999.90x = 106,514,999.85 × 40,776,911.90
  4. Step 4: Simplify right side
    71,009,999.90x = 4,343,352,764,911,963
  5. Step 5: Solve for x
    x = 4,343,352,764,911,963/71,009,999.90
  6. Step 6: Final answer
    x = 61,165,367.85

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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.