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Finding the Fourth Proportional to 79,238,947.80, 118,858,421.70 and 79,238,947.80

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Solution

The fourth proportional to 79,238,947.80, 118,858,421.70 and 79,238,947.80 is: 118,858,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,238,947.80 : 118,858,421.70 = 79,238,947.80 : x
  2. Step 2: Convert to fraction form
    79,238,947.80/118,858,421.70 = 79,238,947.80/x
  3. Step 3: Cross multiply
    79,238,947.80x = 118,858,421.70 × 79,238,947.80
  4. Step 4: Simplify right side
    79,238,947.80x = 9,418,216,272,676,688
  5. Step 5: Solve for x
    x = 9,418,216,272,676,688/79,238,947.80
  6. Step 6: Final answer
    x = 118,858,421.70

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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.