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Finding the Fourth Proportional to 171,656.70, 257,509.35 and 53,315.70

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Solution

The fourth proportional to 171,656.70, 257,509.35 and 53,315.70 is: 79,981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,656.70 : 257,509.35 = 53,315.70 : x
  2. Step 2: Convert to fraction form
    171,656.70/257,509.35 = 53,315.70/x
  3. Step 3: Cross multiply
    171,656.70x = 257,509.35 × 53,315.70
  4. Step 4: Simplify right side
    171,656.70x = 13,729,291,251.80
  5. Step 5: Solve for x
    x = 13,729,291,251.80/171,656.70
  6. Step 6: Final answer
    x = 79,981.10

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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.