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Finding the Fourth Proportional to 338,649.20, 473,486.80 and 338,649.20

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Solution

The fourth proportional to 338,649.20, 473,486.80 and 338,649.20 is: 473,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,649.20 : 473,486.80 = 338,649.20 : x
  2. Step 2: Convert to fraction form
    338,649.20/473,486.80 = 338,649.20/x
  3. Step 3: Cross multiply
    338,649.20x = 473,486.80 × 338,649.20
  4. Step 4: Simplify right side
    338,649.20x = 160,345,926,030.56
  5. Step 5: Solve for x
    x = 160,345,926,030.56/338,649.20
  6. Step 6: Final answer
    x = 473,486.80

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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.