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Finding the Fourth Proportional to 280,647.95, 387,294.08 and 151,586.30

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Solution

The fourth proportional to 280,647.95, 387,294.08 and 151,586.30 is: 209,189.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,647.95 : 387,294.08 = 151,586.30 : x
  2. Step 2: Convert to fraction form
    280,647.95/387,294.08 = 151,586.30/x
  3. Step 3: Cross multiply
    280,647.95x = 387,294.08 × 151,586.30
  4. Step 4: Simplify right side
    280,647.95x = 58,708,475,231.08
  5. Step 5: Solve for x
    x = 58,708,475,231.08/280,647.95
  6. Step 6: Final answer
    x = 209,189.04

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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.