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Finding the Fourth Proportional to 559,062.28, 771,518.60 and 317,322.24

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Solution

The fourth proportional to 559,062.28, 771,518.60 and 317,322.24 is: 437,911.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,062.28 : 771,518.60 = 317,322.24 : x
  2. Step 2: Convert to fraction form
    559,062.28/771,518.60 = 317,322.24/x
  3. Step 3: Cross multiply
    559,062.28x = 771,518.60 × 317,322.24
  4. Step 4: Simplify right side
    559,062.28x = 244,820,010,353.66
  5. Step 5: Solve for x
    x = 244,820,010,353.66/559,062.28
  6. Step 6: Final answer
    x = 437,911.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.