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Finding the Fourth Proportional to 615,215.10, 923,806.80 and 465,624.30

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Solution

The fourth proportional to 615,215.10, 923,806.80 and 465,624.30 is: 699,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,215.10 : 923,806.80 = 465,624.30 : x
  2. Step 2: Convert to fraction form
    615,215.10/923,806.80 = 465,624.30/x
  3. Step 3: Cross multiply
    615,215.10x = 923,806.80 × 465,624.30
  4. Step 4: Simplify right side
    615,215.10x = 430,146,894,585.24
  5. Step 5: Solve for x
    x = 430,146,894,585.24/615,215.10
  6. Step 6: Final answer
    x = 699,181.30

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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.