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Finding the Fourth Proportional to 15,475,374.80, 21,687,919.60 and 15,475,374.80

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Solution

The fourth proportional to 15,475,374.80, 21,687,919.60 and 15,475,374.80 is: 21,687,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475,374.80 : 21,687,919.60 = 15,475,374.80 : x
  2. Step 2: Convert to fraction form
    15,475,374.80/21,687,919.60 = 15,475,374.80/x
  3. Step 3: Cross multiply
    15,475,374.80x = 21,687,919.60 × 15,475,374.80
  4. Step 4: Simplify right side
    15,475,374.80x = 335,628,684,442,266.12
  5. Step 5: Solve for x
    x = 335,628,684,442,266.12/15,475,374.80
  6. Step 6: Final answer
    x = 21,687,919.60

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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.