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Finding the Fourth Proportional to 9,404,579.90, 12,978,462.48 and 5,275,526.34

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Solution

The fourth proportional to 9,404,579.90, 12,978,462.48 and 5,275,526.34 is: 7,280,306.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,404,579.90 : 12,978,462.48 = 5,275,526.34 : x
  2. Step 2: Convert to fraction form
    9,404,579.90/12,978,462.48 = 5,275,526.34/x
  3. Step 3: Cross multiply
    9,404,579.90x = 12,978,462.48 × 5,275,526.34
  4. Step 4: Simplify right side
    9,404,579.90x = 68,468,220,665,941.73
  5. Step 5: Solve for x
    x = 68,468,220,665,941.73/9,404,579.90
  6. Step 6: Final answer
    x = 7,280,306.13

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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.