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Finding the Fourth Proportional to 65,168,327.70, 97,856,939.55 and 51,816,186.90

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Solution

The fourth proportional to 65,168,327.70, 97,856,939.55 and 51,816,186.90 is: 77,807,328.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,168,327.70 : 97,856,939.55 = 51,816,186.90 : x
  2. Step 2: Convert to fraction form
    65,168,327.70/97,856,939.55 = 51,816,186.90/x
  3. Step 3: Cross multiply
    65,168,327.70x = 97,856,939.55 × 51,816,186.90
  4. Step 4: Simplify right side
    65,168,327.70x = 5,070,573,469,184,802
  5. Step 5: Solve for x
    x = 5,070,573,469,184,802/65,168,327.70
  6. Step 6: Final answer
    x = 77,807,328.32

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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.