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Finding the Fourth Proportional to 666,546.60, 921,603.78 and 582,565.80

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Solution

The fourth proportional to 666,546.60, 921,603.78 and 582,565.80 is: 805,487.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,546.60 : 921,603.78 = 582,565.80 : x
  2. Step 2: Convert to fraction form
    666,546.60/921,603.78 = 582,565.80/x
  3. Step 3: Cross multiply
    666,546.60x = 921,603.78 × 582,565.80
  4. Step 4: Simplify right side
    666,546.60x = 536,894,843,378.72
  5. Step 5: Solve for x
    x = 536,894,843,378.72/666,546.60
  6. Step 6: Final answer
    x = 805,487.33

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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.