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Finding the Fourth Proportional to 1,512,530.90, 2,119,117.90 and 1,512,530.90

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Solution

The fourth proportional to 1,512,530.90, 2,119,117.90 and 1,512,530.90 is: 2,119,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512,530.90 : 2,119,117.90 = 1,512,530.90 : x
  2. Step 2: Convert to fraction form
    1,512,530.90/2,119,117.90 = 1,512,530.90/x
  3. Step 3: Cross multiply
    1,512,530.90x = 2,119,117.90 × 1,512,530.90
  4. Step 4: Simplify right side
    1,512,530.90x = 3,205,231,304,493.11
  5. Step 5: Solve for x
    x = 3,205,231,304,493.11/1,512,530.90
  6. Step 6: Final answer
    x = 2,119,117.90

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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.