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Finding the Fourth Proportional to 40,987,901.80, 61,481,852.70 and 10,695,764.80

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Solution

The fourth proportional to 40,987,901.80, 61,481,852.70 and 10,695,764.80 is: 16,043,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,987,901.80 : 61,481,852.70 = 10,695,764.80 : x
  2. Step 2: Convert to fraction form
    40,987,901.80/61,481,852.70 = 10,695,764.80/x
  3. Step 3: Cross multiply
    40,987,901.80x = 61,481,852.70 × 10,695,764.80
  4. Step 4: Simplify right side
    40,987,901.80x = 657,595,435,947,445
  5. Step 5: Solve for x
    x = 657,595,435,947,445/40,987,901.80
  6. Step 6: Final answer
    x = 16,043,647.20

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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.