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Finding the Fourth Proportional to 518,521.64, 778,023.04 and 219,072.14

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Solution

The fourth proportional to 518,521.64, 778,023.04 and 219,072.14 is: 328,709.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,521.64 : 778,023.04 = 219,072.14 : x
  2. Step 2: Convert to fraction form
    518,521.64/778,023.04 = 219,072.14/x
  3. Step 3: Cross multiply
    518,521.64x = 778,023.04 × 219,072.14
  4. Step 4: Simplify right side
    518,521.64x = 170,443,167,904.31
  5. Step 5: Solve for x
    x = 170,443,167,904.31/518,521.64
  6. Step 6: Final answer
    x = 328,709.84

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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.