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Finding the Fourth Proportional to 1,566,189.80, 2,187,941.80 and 1,566,189.80

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Solution

The fourth proportional to 1,566,189.80, 2,187,941.80 and 1,566,189.80 is: 2,187,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566,189.80 : 2,187,941.80 = 1,566,189.80 : x
  2. Step 2: Convert to fraction form
    1,566,189.80/2,187,941.80 = 1,566,189.80/x
  3. Step 3: Cross multiply
    1,566,189.80x = 2,187,941.80 × 1,566,189.80
  4. Step 4: Simplify right side
    1,566,189.80x = 3,426,732,130,153.64
  5. Step 5: Solve for x
    x = 3,426,732,130,153.64/1,566,189.80
  6. Step 6: Final answer
    x = 2,187,941.80

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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.