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Finding the Fourth Proportional to 519,972.14, 779,803.23 and 220,447.91

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Solution

The fourth proportional to 519,972.14, 779,803.23 and 220,447.91 is: 330,606.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,972.14 : 779,803.23 = 220,447.91 : x
  2. Step 2: Convert to fraction form
    519,972.14/779,803.23 = 220,447.91/x
  3. Step 3: Cross multiply
    519,972.14x = 779,803.23 × 220,447.91
  4. Step 4: Simplify right side
    519,972.14x = 171,905,992,264.75
  5. Step 5: Solve for x
    x = 171,905,992,264.75/519,972.14
  6. Step 6: Final answer
    x = 330,606.16

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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.