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Finding the Fourth Proportional to 8,721,436.14, 12,035,978.19 and 4,854,204.90

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Solution

The fourth proportional to 8,721,436.14, 12,035,978.19 and 4,854,204.90 is: 6,699,023.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721,436.14 : 12,035,978.19 = 4,854,204.90 : x
  2. Step 2: Convert to fraction form
    8,721,436.14/12,035,978.19 = 4,854,204.90/x
  3. Step 3: Cross multiply
    8,721,436.14x = 12,035,978.19 × 4,854,204.90
  4. Step 4: Simplify right side
    8,721,436.14x = 58,425,104,306,191.13
  5. Step 5: Solve for x
    x = 58,425,104,306,191.13/8,721,436.14
  6. Step 6: Final answer
    x = 6,699,023.35

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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.