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Finding the Fourth Proportional to 42,056.90, 63,066.90 and 15,743.19

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Solution

The fourth proportional to 42,056.90, 63,066.90 and 15,743.19 is: 23,607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,056.90 : 63,066.90 = 15,743.19 : x
  2. Step 2: Convert to fraction form
    42,056.90/63,066.90 = 15,743.19/x
  3. Step 3: Cross multiply
    42,056.90x = 63,066.90 × 15,743.19
  4. Step 4: Simplify right side
    42,056.90x = 992,874,086.05
  5. Step 5: Solve for x
    x = 992,874,086.05/42,056.90
  6. Step 6: Final answer
    x = 23,607.88

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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.