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Finding the Fourth Proportional to 185,864.67, 256,496.40 and 100,981.80

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Solution

The fourth proportional to 185,864.67, 256,496.40 and 100,981.80 is: 139,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,864.67 : 256,496.40 = 100,981.80 : x
  2. Step 2: Convert to fraction form
    185,864.67/256,496.40 = 100,981.80/x
  3. Step 3: Cross multiply
    185,864.67x = 256,496.40 × 100,981.80
  4. Step 4: Simplify right side
    185,864.67x = 25,901,468,165.52
  5. Step 5: Solve for x
    x = 25,901,468,165.52/185,864.67
  6. Step 6: Final answer
    x = 139,356.60

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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.