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Finding the Fourth Proportional to 147,532,978.80, 206,848,501.20 and 147,532,978.80

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Solution

The fourth proportional to 147,532,978.80, 206,848,501.20 and 147,532,978.80 is: 206,848,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,532,978.80 : 206,848,501.20 = 147,532,978.80 : x
  2. Step 2: Convert to fraction form
    147,532,978.80/206,848,501.20 = 147,532,978.80/x
  3. Step 3: Cross multiply
    147,532,978.80x = 206,848,501.20 × 147,532,978.80
  4. Step 4: Simplify right side
    147,532,978.80x = 30,516,975,542,351,376
  5. Step 5: Solve for x
    x = 30,516,975,542,351,376/147,532,978.80
  6. Step 6: Final answer
    x = 206,848,501.20

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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.