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Finding the Fourth Proportional to 373,339.20, 561,391.20 and 312,513.60

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Solution

The fourth proportional to 373,339.20, 561,391.20 and 312,513.60 is: 469,927.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,339.20 : 561,391.20 = 312,513.60 : x
  2. Step 2: Convert to fraction form
    373,339.20/561,391.20 = 312,513.60/x
  3. Step 3: Cross multiply
    373,339.20x = 561,391.20 × 312,513.60
  4. Step 4: Simplify right side
    373,339.20x = 175,442,384,920.32
  5. Step 5: Solve for x
    x = 175,442,384,920.32/373,339.20
  6. Step 6: Final answer
    x = 469,927.58

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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.