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Finding the Fourth Proportional to 438,666.88, 605,900.06 and 317,616.52

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Solution

The fourth proportional to 438,666.88, 605,900.06 and 317,616.52 is: 438,701.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,666.88 : 605,900.06 = 317,616.52 : x
  2. Step 2: Convert to fraction form
    438,666.88/605,900.06 = 317,616.52/x
  3. Step 3: Cross multiply
    438,666.88x = 605,900.06 × 317,616.52
  4. Step 4: Simplify right side
    438,666.88x = 192,443,868,524.99
  5. Step 5: Solve for x
    x = 192,443,868,524.99/438,666.88
  6. Step 6: Final answer
    x = 438,701.61

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1.5x scale

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.