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Finding the Fourth Proportional to 519,987.50, 779,882.61 and 253,479.98

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Solution

The fourth proportional to 519,987.50, 779,882.61 and 253,479.98 is: 380,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,987.50 : 779,882.61 = 253,479.98 : x
  2. Step 2: Convert to fraction form
    519,987.50/779,882.61 = 253,479.98/x
  3. Step 3: Cross multiply
    519,987.50x = 779,882.61 × 253,479.98
  4. Step 4: Simplify right side
    519,987.50x = 197,684,628,385.15
  5. Step 5: Solve for x
    x = 197,684,628,385.15/519,987.50
  6. Step 6: Final answer
    x = 380,171.89

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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.