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Finding the Fourth Proportional to 256,654.32, 354,127.32 and 143,473.20

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Solution

The fourth proportional to 256,654.32, 354,127.32 and 143,473.20 is: 197,961.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,654.32 : 354,127.32 = 143,473.20 : x
  2. Step 2: Convert to fraction form
    256,654.32/354,127.32 = 143,473.20/x
  3. Step 3: Cross multiply
    256,654.32x = 354,127.32 × 143,473.20
  4. Step 4: Simplify right side
    256,654.32x = 50,807,779,807.82
  5. Step 5: Solve for x
    x = 50,807,779,807.82/256,654.32
  6. Step 6: Final answer
    x = 197,961.91

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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.