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Finding the Fourth Proportional to 172,059.60, 257,360.40 and 154,417.80

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Solution

The fourth proportional to 172,059.60, 257,360.40 and 154,417.80 is: 230,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,059.60 : 257,360.40 = 154,417.80 : x
  2. Step 2: Convert to fraction form
    172,059.60/257,360.40 = 154,417.80/x
  3. Step 3: Cross multiply
    172,059.60x = 257,360.40 × 154,417.80
  4. Step 4: Simplify right side
    172,059.60x = 39,741,026,775.12
  5. Step 5: Solve for x
    x = 39,741,026,775.12/172,059.60
  6. Step 6: Final answer
    x = 230,972.45

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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.