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Finding the Fourth Proportional to 869,810.10, 1,304,715.15 and 869,810.10

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Solution

The fourth proportional to 869,810.10, 1,304,715.15 and 869,810.10 is: 1,304,715.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,810.10 : 1,304,715.15 = 869,810.10 : x
  2. Step 2: Convert to fraction form
    869,810.10/1,304,715.15 = 869,810.10/x
  3. Step 3: Cross multiply
    869,810.10x = 1,304,715.15 × 869,810.10
  4. Step 4: Simplify right side
    869,810.10x = 1,134,854,415,093.01
  5. Step 5: Solve for x
    x = 1,134,854,415,093.01/869,810.10
  6. Step 6: Final answer
    x = 1,304,715.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.