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Finding the Fourth Proportional to 92,657.57, 138,878.87 and 42,632.64

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Solution

The fourth proportional to 92,657.57, 138,878.87 and 42,632.64 is: 63,899.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,657.57 : 138,878.87 = 42,632.64 : x
  2. Step 2: Convert to fraction form
    92,657.57/138,878.87 = 42,632.64/x
  3. Step 3: Cross multiply
    92,657.57x = 138,878.87 × 42,632.64
  4. Step 4: Simplify right side
    92,657.57x = 5,920,772,655.15
  5. Step 5: Solve for x
    x = 5,920,772,655.15/92,657.57
  6. Step 6: Final answer
    x = 63,899.51

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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.