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Finding the Fourth Proportional to 63,108.01, 87,043.36 and 42,928.99

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Solution

The fourth proportional to 63,108.01, 87,043.36 and 42,928.99 is: 59,210.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,108.01 : 87,043.36 = 42,928.99 : x
  2. Step 2: Convert to fraction form
    63,108.01/87,043.36 = 42,928.99/x
  3. Step 3: Cross multiply
    63,108.01x = 87,043.36 × 42,928.99
  4. Step 4: Simplify right side
    63,108.01x = 3,736,683,286.57
  5. Step 5: Solve for x
    x = 3,736,683,286.57/63,108.01
  6. Step 6: Final answer
    x = 59,210.92

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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.