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Finding the Fourth Proportional to 18,869,907.10, 28,304,860.65 and 18,869,907.10

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Solution

The fourth proportional to 18,869,907.10, 28,304,860.65 and 18,869,907.10 is: 28,304,860.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869,907.10 : 28,304,860.65 = 18,869,907.10 : x
  2. Step 2: Convert to fraction form
    18,869,907.10/28,304,860.65 = 18,869,907.10/x
  3. Step 3: Cross multiply
    18,869,907.10x = 28,304,860.65 × 18,869,907.10
  4. Step 4: Simplify right side
    18,869,907.10x = 534,110,090,943,945.62
  5. Step 5: Solve for x
    x = 534,110,090,943,945.62/18,869,907.10
  6. Step 6: Final answer
    x = 28,304,860.65

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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.