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Finding the Fourth Proportional to 338,643.70, 473,479.10 and 338,643.70

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Solution

The fourth proportional to 338,643.70, 473,479.10 and 338,643.70 is: 473,479.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,643.70 : 473,479.10 = 338,643.70 : x
  2. Step 2: Convert to fraction form
    338,643.70/473,479.10 = 338,643.70/x
  3. Step 3: Cross multiply
    338,643.70x = 473,479.10 × 338,643.70
  4. Step 4: Simplify right side
    338,643.70x = 160,340,714,296.67
  5. Step 5: Solve for x
    x = 160,340,714,296.67/338,643.70
  6. Step 6: Final answer
    x = 473,479.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.