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Finding the Fourth Proportional to 60,487.21, 90,663.58 and 45,648.01

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Solution

The fourth proportional to 60,487.21, 90,663.58 and 45,648.01 is: 68,421.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,487.21 : 90,663.58 = 45,648.01 : x
  2. Step 2: Convert to fraction form
    60,487.21/90,663.58 = 45,648.01/x
  3. Step 3: Cross multiply
    60,487.21x = 90,663.58 × 45,648.01
  4. Step 4: Simplify right side
    60,487.21x = 4,138,612,006.48
  5. Step 5: Solve for x
    x = 4,138,612,006.48/60,487.21
  6. Step 6: Final answer
    x = 68,421.27

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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.