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Finding the Fourth Proportional to 10,361,203.90, 15,541,805.85 and 7,841,779.90

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Solution

The fourth proportional to 10,361,203.90, 15,541,805.85 and 7,841,779.90 is: 11,762,669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,361,203.90 : 15,541,805.85 = 7,841,779.90 : x
  2. Step 2: Convert to fraction form
    10,361,203.90/15,541,805.85 = 7,841,779.90/x
  3. Step 3: Cross multiply
    10,361,203.90x = 15,541,805.85 × 7,841,779.90
  4. Step 4: Simplify right side
    10,361,203.90x = 121,875,420,724,232.42
  5. Step 5: Solve for x
    x = 121,875,420,724,232.42/10,361,203.90
  6. Step 6: Final answer
    x = 11,762,669.85

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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.