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Finding the Fourth Proportional to 172,176.60, 257,535.90 and 154,534.80

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Solution

The fourth proportional to 172,176.60, 257,535.90 and 154,534.80 is: 231,147.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,176.60 : 257,535.90 = 154,534.80 : x
  2. Step 2: Convert to fraction form
    172,176.60/257,535.90 = 154,534.80/x
  3. Step 3: Cross multiply
    172,176.60x = 257,535.90 × 154,534.80
  4. Step 4: Simplify right side
    172,176.60x = 39,798,258,799.32
  5. Step 5: Solve for x
    x = 39,798,258,799.32/172,176.60
  6. Step 6: Final answer
    x = 231,147.90

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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.