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Finding the Fourth Proportional to 79,553,326.80, 111,676,988.40 and 79,553,326.80

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Solution

The fourth proportional to 79,553,326.80, 111,676,988.40 and 79,553,326.80 is: 111,676,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,553,326.80 : 111,676,988.40 = 79,553,326.80 : x
  2. Step 2: Convert to fraction form
    79,553,326.80/111,676,988.40 = 79,553,326.80/x
  3. Step 3: Cross multiply
    79,553,326.80x = 111,676,988.40 × 79,553,326.80
  4. Step 4: Simplify right side
    79,553,326.80x = 8,884,275,954,225,009
  5. Step 5: Solve for x
    x = 8,884,275,954,225,009/79,553,326.80
  6. Step 6: Final answer
    x = 111,676,988.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.