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Finding the Fourth Proportional to 79,290,010.80, 118,935,016.20 and 79,290,010.80

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Solution

The fourth proportional to 79,290,010.80, 118,935,016.20 and 79,290,010.80 is: 118,935,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,290,010.80 : 118,935,016.20 = 79,290,010.80 : x
  2. Step 2: Convert to fraction form
    79,290,010.80/118,935,016.20 = 79,290,010.80/x
  3. Step 3: Cross multiply
    79,290,010.80x = 118,935,016.20 × 79,290,010.80
  4. Step 4: Simplify right side
    79,290,010.80x = 9,430,358,718,996,174
  5. Step 5: Solve for x
    x = 9,430,358,718,996,174/79,290,010.80
  6. Step 6: Final answer
    x = 118,935,016.20

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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.