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Finding the Fourth Proportional to 669,806.72, 924,305.28 and 397,899.44

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Solution

The fourth proportional to 669,806.72, 924,305.28 and 397,899.44 is: 549,084.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,806.72 : 924,305.28 = 397,899.44 : x
  2. Step 2: Convert to fraction form
    669,806.72/924,305.28 = 397,899.44/x
  3. Step 3: Cross multiply
    669,806.72x = 924,305.28 × 397,899.44
  4. Step 4: Simplify right side
    669,806.72x = 367,780,553,301.04
  5. Step 5: Solve for x
    x = 367,780,553,301.04/669,806.72
  6. Step 6: Final answer
    x = 549,084.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.