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Finding the Fourth Proportional to 256,894.08, 354,520.80 and 143,715.84

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Solution

The fourth proportional to 256,894.08, 354,520.80 and 143,715.84 is: 198,331.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,894.08 : 354,520.80 = 143,715.84 : x
  2. Step 2: Convert to fraction form
    256,894.08/354,520.80 = 143,715.84/x
  3. Step 3: Cross multiply
    256,894.08x = 354,520.80 × 143,715.84
  4. Step 4: Simplify right side
    256,894.08x = 50,950,254,569.47
  5. Step 5: Solve for x
    x = 50,950,254,569.47/256,894.08
  6. Step 6: Final answer
    x = 198,331.76

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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.