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Finding the Fourth Proportional to 664,660.17, 914,922 and 579,629.61

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Solution

The fourth proportional to 664,660.17, 914,922 and 579,629.61 is: 797,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,660.17 : 914,922 = 579,629.61 : x
  2. Step 2: Convert to fraction form
    664,660.17/914,922 = 579,629.61/x
  3. Step 3: Cross multiply
    664,660.17x = 914,922 × 579,629.61
  4. Step 4: Simplify right side
    664,660.17x = 530,315,882,040.42
  5. Step 5: Solve for x
    x = 530,315,882,040.42/664,660.17
  6. Step 6: Final answer
    x = 797,875.22

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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.