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Finding the Fourth Proportional to 518,697.19, 777,858.55 and 219,200.91

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Solution

The fourth proportional to 518,697.19, 777,858.55 and 219,200.91 is: 328,722.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,697.19 : 777,858.55 = 219,200.91 : x
  2. Step 2: Convert to fraction form
    518,697.19/777,858.55 = 219,200.91/x
  3. Step 3: Cross multiply
    518,697.19x = 777,858.55 × 219,200.91
  4. Step 4: Simplify right side
    518,697.19x = 170,507,302,011.28
  5. Step 5: Solve for x
    x = 170,507,302,011.28/518,697.19
  6. Step 6: Final answer
    x = 328,722.24

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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.