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Finding the Fourth Proportional to 1,566,167.80, 2,187,911 and 1,566,167.80

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Solution

The fourth proportional to 1,566,167.80, 2,187,911 and 1,566,167.80 is: 2,187,911

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566,167.80 : 2,187,911 = 1,566,167.80 : x
  2. Step 2: Convert to fraction form
    1,566,167.80/2,187,911 = 1,566,167.80/x
  3. Step 3: Cross multiply
    1,566,167.80x = 2,187,911 × 1,566,167.80
  4. Step 4: Simplify right side
    1,566,167.80x = 3,426,635,757,465.80
  5. Step 5: Solve for x
    x = 3,426,635,757,465.80/1,566,167.80
  6. Step 6: Final answer
    x = 2,187,911

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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.