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Finding the Fourth Proportional to 257,817.79, 355,853.95 and 176,179.10

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Solution

The fourth proportional to 257,817.79, 355,853.95 and 176,179.10 is: 243,171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,817.79 : 355,853.95 = 176,179.10 : x
  2. Step 2: Convert to fraction form
    257,817.79/355,853.95 = 176,179.10/x
  3. Step 3: Cross multiply
    257,817.79x = 355,853.95 × 176,179.10
  4. Step 4: Simplify right side
    257,817.79x = 62,694,028,642.45
  5. Step 5: Solve for x
    x = 62,694,028,642.45/257,817.79
  6. Step 6: Final answer
    x = 243,171.85

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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.