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Finding the Fourth Proportional to 161,958,643.70, 242,937,965.55 and 161,958,643.70

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Solution

The fourth proportional to 161,958,643.70, 242,937,965.55 and 161,958,643.70 is: 242,937,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,958,643.70 : 242,937,965.55 = 161,958,643.70 : x
  2. Step 2: Convert to fraction form
    161,958,643.70/242,937,965.55 = 161,958,643.70/x
  3. Step 3: Cross multiply
    161,958,643.70x = 242,937,965.55 × 161,958,643.70
  4. Step 4: Simplify right side
    161,958,643.70x = 39,345,903,403,715,320
  5. Step 5: Solve for x
    x = 39,345,903,403,715,320/161,958,643.70
  6. Step 6: Final answer
    x = 242,937,965.55

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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.