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Finding the Fourth Proportional to 280,610.58, 387,251.11 and 153,294.37

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Solution

The fourth proportional to 280,610.58, 387,251.11 and 153,294.37 is: 211,550.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,610.58 : 387,251.11 = 153,294.37 : x
  2. Step 2: Convert to fraction form
    280,610.58/387,251.11 = 153,294.37/x
  3. Step 3: Cross multiply
    280,610.58x = 387,251.11 × 153,294.37
  4. Step 4: Simplify right side
    280,610.58x = 59,363,416,341.03
  5. Step 5: Solve for x
    x = 59,363,416,341.03/280,610.58
  6. Step 6: Final answer
    x = 211,550.89

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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.