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Finding the Fourth Proportional to 691,805.26, 954,545.43 and 420,016.06

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Solution

The fourth proportional to 691,805.26, 954,545.43 and 420,016.06 is: 579,533.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,805.26 : 954,545.43 = 420,016.06 : x
  2. Step 2: Convert to fraction form
    691,805.26/954,545.43 = 420,016.06/x
  3. Step 3: Cross multiply
    691,805.26x = 954,545.43 × 420,016.06
  4. Step 4: Simplify right side
    691,805.26x = 400,924,410,599.61
  5. Step 5: Solve for x
    x = 400,924,410,599.61/691,805.26
  6. Step 6: Final answer
    x = 579,533.63

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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.