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Finding the Fourth Proportional to 127,041.66, 190,494.32 and 42,773.72

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Solution

The fourth proportional to 127,041.66, 190,494.32 and 42,773.72 is: 64,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,041.66 : 190,494.32 = 42,773.72 : x
  2. Step 2: Convert to fraction form
    127,041.66/190,494.32 = 42,773.72/x
  3. Step 3: Cross multiply
    127,041.66x = 190,494.32 × 42,773.72
  4. Step 4: Simplify right side
    127,041.66x = 8,148,149,538.93
  5. Step 5: Solve for x
    x = 8,148,149,538.93/127,041.66
  6. Step 6: Final answer
    x = 64,137.62

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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.