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Finding the Fourth Proportional to 587,628.30, 881,442.45 and 421,740.30

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Solution

The fourth proportional to 587,628.30, 881,442.45 and 421,740.30 is: 632,610.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,628.30 : 881,442.45 = 421,740.30 : x
  2. Step 2: Convert to fraction form
    587,628.30/881,442.45 = 421,740.30/x
  3. Step 3: Cross multiply
    587,628.30x = 881,442.45 × 421,740.30
  4. Step 4: Simplify right side
    587,628.30x = 371,739,803,295.74
  5. Step 5: Solve for x
    x = 371,739,803,295.74/587,628.30
  6. Step 6: Final answer
    x = 632,610.45

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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.