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Finding the Fourth Proportional to 84,074,744.70, 126,112,117.05 and 84,074,744.70

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Solution

The fourth proportional to 84,074,744.70, 126,112,117.05 and 84,074,744.70 is: 126,112,117.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,074,744.70 : 126,112,117.05 = 84,074,744.70 : x
  2. Step 2: Convert to fraction form
    84,074,744.70/126,112,117.05 = 84,074,744.70/x
  3. Step 3: Cross multiply
    84,074,744.70x = 126,112,117.05 × 84,074,744.70
  4. Step 4: Simplify right side
    84,074,744.70x = 10,602,844,044,555,268
  5. Step 5: Solve for x
    x = 10,602,844,044,555,268/84,074,744.70
  6. Step 6: Final answer
    x = 126,112,117.05

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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.