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Finding the Fourth Proportional to 256,862.35, 354,612.57 and 154,913.74

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Solution

The fourth proportional to 256,862.35, 354,612.57 and 154,913.74 is: 213,866.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,862.35 : 354,612.57 = 154,913.74 : x
  2. Step 2: Convert to fraction form
    256,862.35/354,612.57 = 154,913.74/x
  3. Step 3: Cross multiply
    256,862.35x = 354,612.57 × 154,913.74
  4. Step 4: Simplify right side
    256,862.35x = 54,934,359,996.95
  5. Step 5: Solve for x
    x = 54,934,359,996.95/256,862.35
  6. Step 6: Final answer
    x = 213,866.92

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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.