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Finding the Fourth Proportional to 576,545.40, 863,651.70 and 399,252.60

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Solution

The fourth proportional to 576,545.40, 863,651.70 and 399,252.60 is: 598,071.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,545.40 : 863,651.70 = 399,252.60 : x
  2. Step 2: Convert to fraction form
    576,545.40/863,651.70 = 399,252.60/x
  3. Step 3: Cross multiply
    576,545.40x = 863,651.70 × 399,252.60
  4. Step 4: Simplify right side
    576,545.40x = 344,815,186,719.42
  5. Step 5: Solve for x
    x = 344,815,186,719.42/576,545.40
  6. Step 6: Final answer
    x = 598,071.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.