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Finding the Fourth Proportional to 280,563.34, 387,177.42 and 153,239.24

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Solution

The fourth proportional to 280,563.34, 387,177.42 and 153,239.24 is: 211,470.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,563.34 : 387,177.42 = 153,239.24 : x
  2. Step 2: Convert to fraction form
    280,563.34/387,177.42 = 153,239.24/x
  3. Step 3: Cross multiply
    280,563.34x = 387,177.42 × 153,239.24
  4. Step 4: Simplify right side
    280,563.34x = 59,330,773,585.96
  5. Step 5: Solve for x
    x = 59,330,773,585.96/280,563.34
  6. Step 6: Final answer
    x = 211,470.16

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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.