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Finding the Fourth Proportional to 15,475,327.80, 21,687,853.80 and 15,475,327.80

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Solution

The fourth proportional to 15,475,327.80, 21,687,853.80 and 15,475,327.80 is: 21,687,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475,327.80 : 21,687,853.80 = 15,475,327.80 : x
  2. Step 2: Convert to fraction form
    15,475,327.80/21,687,853.80 = 15,475,327.80/x
  3. Step 3: Cross multiply
    15,475,327.80x = 21,687,853.80 × 15,475,327.80
  4. Step 4: Simplify right side
    15,475,327.80x = 335,626,646,833,475.69
  5. Step 5: Solve for x
    x = 335,626,646,833,475.69/15,475,327.80
  6. Step 6: Final answer
    x = 21,687,853.80

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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.