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Finding the Fourth Proportional to 593,689.20, 890,447.40 and 172,921.20

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Solution

The fourth proportional to 593,689.20, 890,447.40 and 172,921.20 is: 259,356.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,689.20 : 890,447.40 = 172,921.20 : x
  2. Step 2: Convert to fraction form
    593,689.20/890,447.40 = 172,921.20/x
  3. Step 3: Cross multiply
    593,689.20x = 890,447.40 × 172,921.20
  4. Step 4: Simplify right side
    593,689.20x = 153,977,232,944.88
  5. Step 5: Solve for x
    x = 153,977,232,944.88/593,689.20
  6. Step 6: Final answer
    x = 259,356.63

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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.