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Finding the Fourth Proportional to 280,351.98, 386,885.61 and 153,027.63

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Solution

The fourth proportional to 280,351.98, 386,885.61 and 153,027.63 is: 211,178.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,351.98 : 386,885.61 = 153,027.63 : x
  2. Step 2: Convert to fraction form
    280,351.98/386,885.61 = 153,027.63/x
  3. Step 3: Cross multiply
    280,351.98x = 386,885.61 × 153,027.63
  4. Step 4: Simplify right side
    280,351.98x = 59,204,187,979.40
  5. Step 5: Solve for x
    x = 59,204,187,979.40/280,351.98
  6. Step 6: Final answer
    x = 211,178.06

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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.