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Finding the Fourth Proportional to 17,918,805.20, 26,878,207.80 and 17,620,206.80

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Solution

The fourth proportional to 17,918,805.20, 26,878,207.80 and 17,620,206.80 is: 26,430,310.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,918,805.20 : 26,878,207.80 = 17,620,206.80 : x
  2. Step 2: Convert to fraction form
    17,918,805.20/26,878,207.80 = 17,620,206.80/x
  3. Step 3: Cross multiply
    17,918,805.20x = 26,878,207.80 × 17,620,206.80
  4. Step 4: Simplify right side
    17,918,805.20x = 473,599,579,849,373.06
  5. Step 5: Solve for x
    x = 473,599,579,849,373.06/17,918,805.20
  6. Step 6: Final answer
    x = 26,430,310.20

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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.