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Finding the Fourth Proportional to 60,484.47, 90,728.73 and 21,041.97

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Solution

The fourth proportional to 60,484.47, 90,728.73 and 21,041.97 is: 31,563.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,484.47 : 90,728.73 = 21,041.97 : x
  2. Step 2: Convert to fraction form
    60,484.47/90,728.73 = 21,041.97/x
  3. Step 3: Cross multiply
    60,484.47x = 90,728.73 × 21,041.97
  4. Step 4: Simplify right side
    60,484.47x = 1,909,111,214.80
  5. Step 5: Solve for x
    x = 1,909,111,214.80/60,484.47
  6. Step 6: Final answer
    x = 31,563.66

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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.