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Finding the Fourth Proportional to 315,177.60, 434,935.50 and 177,364.20

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Solution

The fourth proportional to 315,177.60, 434,935.50 and 177,364.20 is: 244,757.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,177.60 : 434,935.50 = 177,364.20 : x
  2. Step 2: Convert to fraction form
    315,177.60/434,935.50 = 177,364.20/x
  3. Step 3: Cross multiply
    315,177.60x = 434,935.50 × 177,364.20
  4. Step 4: Simplify right side
    315,177.60x = 77,141,987,009.10
  5. Step 5: Solve for x
    x = 77,141,987,009.10/315,177.60
  6. Step 6: Final answer
    x = 244,757.20

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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.