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Finding the Fourth Proportional to 519,970.14, 779,800.23 and 220,445.91

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Solution

The fourth proportional to 519,970.14, 779,800.23 and 220,445.91 is: 330,603.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,970.14 : 779,800.23 = 220,445.91 : x
  2. Step 2: Convert to fraction form
    519,970.14/779,800.23 = 220,445.91/x
  3. Step 3: Cross multiply
    519,970.14x = 779,800.23 × 220,445.91
  4. Step 4: Simplify right side
    519,970.14x = 171,903,771,320.56
  5. Step 5: Solve for x
    x = 171,903,771,320.56/519,970.14
  6. Step 6: Final answer
    x = 330,603.16

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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.