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Finding the Fourth Proportional to 558,987.48, 771,363.81 and 317,274.98

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Solution

The fourth proportional to 558,987.48, 771,363.81 and 317,274.98 is: 437,817.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,987.48 : 771,363.81 = 317,274.98 : x
  2. Step 2: Convert to fraction form
    558,987.48/771,363.81 = 317,274.98/x
  3. Step 3: Cross multiply
    558,987.48x = 771,363.81 × 317,274.98
  4. Step 4: Simplify right side
    558,987.48x = 244,734,433,533.66
  5. Step 5: Solve for x
    x = 244,734,433,533.66/558,987.48
  6. Step 6: Final answer
    x = 437,817.38

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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.