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Finding the Fourth Proportional to 1,557,776.90, 2,186,785.90 and 1,557,776.90

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Solution

The fourth proportional to 1,557,776.90, 2,186,785.90 and 1,557,776.90 is: 2,186,785.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,776.90 : 2,186,785.90 = 1,557,776.90 : x
  2. Step 2: Convert to fraction form
    1,557,776.90/2,186,785.90 = 1,557,776.90/x
  3. Step 3: Cross multiply
    1,557,776.90x = 2,186,785.90 × 1,557,776.90
  4. Step 4: Simplify right side
    1,557,776.90x = 3,406,524,560,265.71
  5. Step 5: Solve for x
    x = 3,406,524,560,265.71/1,557,776.90
  6. Step 6: Final answer
    x = 2,186,785.90

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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.