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Finding the Fourth Proportional to 209,952,180.78, 314,928,271.17 and 209,952,180.78

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Solution

The fourth proportional to 209,952,180.78, 314,928,271.17 and 209,952,180.78 is: 314,928,271.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,180.78 : 314,928,271.17 = 209,952,180.78 : x
  2. Step 2: Convert to fraction form
    209,952,180.78/314,928,271.17 = 209,952,180.78/x
  3. Step 3: Cross multiply
    209,952,180.78x = 314,928,271.17 × 209,952,180.78
  4. Step 4: Simplify right side
    209,952,180.78x = 66,119,877,321,416,704
  5. Step 5: Solve for x
    x = 66,119,877,321,416,704/209,952,180.78
  6. Step 6: Final answer
    x = 314,928,271.17

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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.