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Finding the Fourth Proportional to 518,699.19, 777,861.55 and 219,202.91

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Solution

The fourth proportional to 518,699.19, 777,861.55 and 219,202.91 is: 328,725.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,699.19 : 777,861.55 = 219,202.91 : x
  2. Step 2: Convert to fraction form
    518,699.19/777,861.55 = 219,202.91/x
  3. Step 3: Cross multiply
    518,699.19x = 777,861.55 × 219,202.91
  4. Step 4: Simplify right side
    518,699.19x = 170,509,515,337.11
  5. Step 5: Solve for x
    x = 170,509,515,337.11/518,699.19
  6. Step 6: Final answer
    x = 328,725.24

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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.