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Finding the Fourth Proportional to 63,342.54, 87,403.86 and 53,820.99

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Solution

The fourth proportional to 63,342.54, 87,403.86 and 53,820.99 is: 74,265.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,342.54 : 87,403.86 = 53,820.99 : x
  2. Step 2: Convert to fraction form
    63,342.54/87,403.86 = 53,820.99/x
  3. Step 3: Cross multiply
    63,342.54x = 87,403.86 × 53,820.99
  4. Step 4: Simplify right side
    63,342.54x = 4,704,162,275.02
  5. Step 5: Solve for x
    x = 4,704,162,275.02/63,342.54
  6. Step 6: Final answer
    x = 74,265.45

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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.