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Finding the Fourth Proportional to 691,499.76, 954,266.12 and 401,170.04

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Solution

The fourth proportional to 691,499.76, 954,266.12 and 401,170.04 is: 553,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,499.76 : 954,266.12 = 401,170.04 : x
  2. Step 2: Convert to fraction form
    691,499.76/954,266.12 = 401,170.04/x
  3. Step 3: Cross multiply
    691,499.76x = 954,266.12 × 401,170.04
  4. Step 4: Simplify right side
    691,499.76x = 382,822,977,531.05
  5. Step 5: Solve for x
    x = 382,822,977,531.05/691,499.76
  6. Step 6: Final answer
    x = 553,612.60

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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.