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Finding the Fourth Proportional to 256,818.94, 354,411.35 and 143,641.69

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Solution

The fourth proportional to 256,818.94, 354,411.35 and 143,641.69 is: 198,226.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,818.94 : 354,411.35 = 143,641.69 : x
  2. Step 2: Convert to fraction form
    256,818.94/354,411.35 = 143,641.69/x
  3. Step 3: Cross multiply
    256,818.94x = 354,411.35 × 143,641.69
  4. Step 4: Simplify right side
    256,818.94x = 50,908,244,203.60
  5. Step 5: Solve for x
    x = 50,908,244,203.60/256,818.94
  6. Step 6: Final answer
    x = 198,226.21

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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.