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Finding the Fourth Proportional to 518,989.80, 778,922.10 and 235,117.20

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Solution

The fourth proportional to 518,989.80, 778,922.10 and 235,117.20 is: 352,873.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,989.80 : 778,922.10 = 235,117.20 : x
  2. Step 2: Convert to fraction form
    518,989.80/778,922.10 = 235,117.20/x
  3. Step 3: Cross multiply
    518,989.80x = 778,922.10 × 235,117.20
  4. Step 4: Simplify right side
    518,989.80x = 183,137,983,170.12
  5. Step 5: Solve for x
    x = 183,137,983,170.12/518,989.80
  6. Step 6: Final answer
    x = 352,873.95

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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.