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Finding the Fourth Proportional to 18,444,938.40, 27,617,641.20 and 18,444,938.40

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Solution

The fourth proportional to 18,444,938.40, 27,617,641.20 and 18,444,938.40 is: 27,617,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,444,938.40 : 27,617,641.20 = 18,444,938.40 : x
  2. Step 2: Convert to fraction form
    18,444,938.40/27,617,641.20 = 18,444,938.40/x
  3. Step 3: Cross multiply
    18,444,938.40x = 27,617,641.20 × 18,444,938.40
  4. Step 4: Simplify right side
    18,444,938.40x = 509,405,690,687,302
  5. Step 5: Solve for x
    x = 509,405,690,687,302/18,444,938.40
  6. Step 6: Final answer
    x = 27,617,641.20

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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.