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Finding the Fourth Proportional to 663,353.20, 995,440.20 and 348,036.40

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Solution

The fourth proportional to 663,353.20, 995,440.20 and 348,036.40 is: 522,269.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,353.20 : 995,440.20 = 348,036.40 : x
  2. Step 2: Convert to fraction form
    663,353.20/995,440.20 = 348,036.40/x
  3. Step 3: Cross multiply
    663,353.20x = 995,440.20 × 348,036.40
  4. Step 4: Simplify right side
    663,353.20x = 346,449,423,623.28
  5. Step 5: Solve for x
    x = 346,449,423,623.28/663,353.20
  6. Step 6: Final answer
    x = 522,269.92

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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.