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Finding the Fourth Proportional to 280,610.36, 387,250.80 and 153,294.16

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Solution

The fourth proportional to 280,610.36, 387,250.80 and 153,294.16 is: 211,550.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,610.36 : 387,250.80 = 153,294.16 : x
  2. Step 2: Convert to fraction form
    280,610.36/387,250.80 = 153,294.16/x
  3. Step 3: Cross multiply
    280,610.36x = 387,250.80 × 153,294.16
  4. Step 4: Simplify right side
    280,610.36x = 59,363,286,095.33
  5. Step 5: Solve for x
    x = 59,363,286,095.33/280,610.36
  6. Step 6: Final answer
    x = 211,550.59

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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.