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Finding the Fourth Proportional to 519,991.50, 779,888.61 and 253,483.98

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Solution

The fourth proportional to 519,991.50, 779,888.61 and 253,483.98 is: 380,177.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,991.50 : 779,888.61 = 253,483.98 : x
  2. Step 2: Convert to fraction form
    519,991.50/779,888.61 = 253,483.98/x
  3. Step 3: Cross multiply
    519,991.50x = 779,888.61 × 253,483.98
  4. Step 4: Simplify right side
    519,991.50x = 197,689,268,819.47
  5. Step 5: Solve for x
    x = 197,689,268,819.47/519,991.50
  6. Step 6: Final answer
    x = 380,177.89

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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.