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Finding the Fourth Proportional to 92,046.96, 138,070.80 and 28,005.74

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Solution

The fourth proportional to 92,046.96, 138,070.80 and 28,005.74 is: 42,008.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,046.96 : 138,070.80 = 28,005.74 : x
  2. Step 2: Convert to fraction form
    92,046.96/138,070.80 = 28,005.74/x
  3. Step 3: Cross multiply
    92,046.96x = 138,070.80 × 28,005.74
  4. Step 4: Simplify right side
    92,046.96x = 3,866,774,236.04
  5. Step 5: Solve for x
    x = 3,866,774,236.04/92,046.96
  6. Step 6: Final answer
    x = 42,008.71

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1.5x scale

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.