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Finding the Fourth Proportional to 243,605,809.87, 365,262,785.87 and 77,537,583.25

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Solution

The fourth proportional to 243,605,809.87, 365,262,785.87 and 77,537,583.25 is: 116,259,926.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,605,809.87 : 365,262,785.87 = 77,537,583.25 : x
  2. Step 2: Convert to fraction form
    243,605,809.87/365,262,785.87 = 77,537,583.25/x
  3. Step 3: Cross multiply
    243,605,809.87x = 365,262,785.87 × 77,537,583.25
  4. Step 4: Simplify right side
    243,605,809.87x = 28,321,593,667,522,048
  5. Step 5: Solve for x
    x = 28,321,593,667,522,048/243,605,809.87
  6. Step 6: Final answer
    x = 116,259,926.98

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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.