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Finding the Fourth Proportional to 265,736,593.20, 398,604,889.80 and 74,260,369.20

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Solution

The fourth proportional to 265,736,593.20, 398,604,889.80 and 74,260,369.20 is: 111,390,553.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,736,593.20 : 398,604,889.80 = 74,260,369.20 : x
  2. Step 2: Convert to fraction form
    265,736,593.20/398,604,889.80 = 74,260,369.20/x
  3. Step 3: Cross multiply
    265,736,593.20x = 398,604,889.80 × 74,260,369.20
  4. Step 4: Simplify right side
    265,736,593.20x = 29,600,546,281,473,316
  5. Step 5: Solve for x
    x = 29,600,546,281,473,316/265,736,593.20
  6. Step 6: Final answer
    x = 111,390,553.80

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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.