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Finding the Fourth Proportional to 171,815.20, 257,722.80 and 101,658.40

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Solution

The fourth proportional to 171,815.20, 257,722.80 and 101,658.40 is: 152,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,815.20 : 257,722.80 = 101,658.40 : x
  2. Step 2: Convert to fraction form
    171,815.20/257,722.80 = 101,658.40/x
  3. Step 3: Cross multiply
    171,815.20x = 257,722.80 × 101,658.40
  4. Step 4: Simplify right side
    171,815.20x = 26,199,687,491.52
  5. Step 5: Solve for x
    x = 26,199,687,491.52/171,815.20
  6. Step 6: Final answer
    x = 152,487.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.