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Finding the Fourth Proportional to 715,454.12, 986,915.54 and 446,715.56

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Solution

The fourth proportional to 715,454.12, 986,915.54 and 446,715.56 is: 616,210.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,454.12 : 986,915.54 = 446,715.56 : x
  2. Step 2: Convert to fraction form
    715,454.12/986,915.54 = 446,715.56/x
  3. Step 3: Cross multiply
    715,454.12x = 986,915.54 × 446,715.56
  4. Step 4: Simplify right side
    715,454.12x = 440,870,528,123.80
  5. Step 5: Solve for x
    x = 440,870,528,123.80/715,454.12
  6. Step 6: Final answer
    x = 616,210.76

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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.