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Finding the Fourth Proportional to 105,887,423.20, 147,940,061.60 and 105,887,423.20

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Solution

The fourth proportional to 105,887,423.20, 147,940,061.60 and 105,887,423.20 is: 147,940,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,887,423.20 : 147,940,061.60 = 105,887,423.20 : x
  2. Step 2: Convert to fraction form
    105,887,423.20/147,940,061.60 = 105,887,423.20/x
  3. Step 3: Cross multiply
    105,887,423.20x = 147,940,061.60 × 105,887,423.20
  4. Step 4: Simplify right side
    105,887,423.20x = 15,664,991,910,873,268
  5. Step 5: Solve for x
    x = 15,664,991,910,873,268/105,887,423.20
  6. Step 6: Final answer
    x = 147,940,061.60

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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.