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Finding the Fourth Proportional to 127,832,803.80, 191,749,205.70 and 56,169,187.80

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Solution

The fourth proportional to 127,832,803.80, 191,749,205.70 and 56,169,187.80 is: 84,253,781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,832,803.80 : 191,749,205.70 = 56,169,187.80 : x
  2. Step 2: Convert to fraction form
    127,832,803.80/191,749,205.70 = 56,169,187.80/x
  3. Step 3: Cross multiply
    127,832,803.80x = 191,749,205.70 × 56,169,187.80
  4. Step 4: Simplify right side
    127,832,803.80x = 10,770,397,145,464,130
  5. Step 5: Solve for x
    x = 10,770,397,145,464,130/127,832,803.80
  6. Step 6: Final answer
    x = 84,253,781.70

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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.