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Finding the Fourth Proportional to 587,616.30, 881,424.45 and 421,728.30

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Solution

The fourth proportional to 587,616.30, 881,424.45 and 421,728.30 is: 632,592.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,616.30 : 881,424.45 = 421,728.30 : x
  2. Step 2: Convert to fraction form
    587,616.30/881,424.45 = 421,728.30/x
  3. Step 3: Cross multiply
    587,616.30x = 881,424.45 × 421,728.30
  4. Step 4: Simplify right side
    587,616.30x = 371,721,634,876.94
  5. Step 5: Solve for x
    x = 371,721,634,876.94/587,616.30
  6. Step 6: Final answer
    x = 632,592.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.