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Finding the Fourth Proportional to 185,873.92, 256,508.70 and 100,990.38

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Solution

The fourth proportional to 185,873.92, 256,508.70 and 100,990.38 is: 139,368.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,873.92 : 256,508.70 = 100,990.38 : x
  2. Step 2: Convert to fraction form
    185,873.92/256,508.70 = 100,990.38/x
  3. Step 3: Cross multiply
    185,873.92x = 256,508.70 × 100,990.38
  4. Step 4: Simplify right side
    185,873.92x = 25,904,911,086.31
  5. Step 5: Solve for x
    x = 25,904,911,086.31/185,873.92
  6. Step 6: Final answer
    x = 139,368.19

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1.5x scale

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.