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Finding the Fourth Proportional to 185,802.39, 256,408.65 and 100,919.48

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Solution

The fourth proportional to 185,802.39, 256,408.65 and 100,919.48 is: 139,269.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,802.39 : 256,408.65 = 100,919.48 : x
  2. Step 2: Convert to fraction form
    185,802.39/256,408.65 = 100,919.48/x
  3. Step 3: Cross multiply
    185,802.39x = 256,408.65 × 100,919.48
  4. Step 4: Simplify right side
    185,802.39x = 25,876,626,343.46
  5. Step 5: Solve for x
    x = 25,876,626,343.46/185,802.39
  6. Step 6: Final answer
    x = 139,269.61

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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.