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Finding the Fourth Proportional to 691,785.99, 954,662.20 and 385,862.13

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Solution

The fourth proportional to 691,785.99, 954,662.20 and 385,862.13 is: 532,488.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,785.99 : 954,662.20 = 385,862.13 : x
  2. Step 2: Convert to fraction form
    691,785.99/954,662.20 = 385,862.13/x
  3. Step 3: Cross multiply
    691,785.99x = 954,662.20 × 385,862.13
  4. Step 4: Simplify right side
    691,785.99x = 368,367,989,922.49
  5. Step 5: Solve for x
    x = 368,367,989,922.49/691,785.99
  6. Step 6: Final answer
    x = 532,488.36

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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.