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Finding the Fourth Proportional to 79,729,089.20, 111,696,307.60 and 79,729,089.20

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Solution

The fourth proportional to 79,729,089.20, 111,696,307.60 and 79,729,089.20 is: 111,696,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,729,089.20 : 111,696,307.60 = 79,729,089.20 : x
  2. Step 2: Convert to fraction form
    79,729,089.20/111,696,307.60 = 79,729,089.20/x
  3. Step 3: Cross multiply
    79,729,089.20x = 111,696,307.60 × 79,729,089.20
  4. Step 4: Simplify right side
    79,729,089.20x = 8,905,444,871,951,038
  5. Step 5: Solve for x
    x = 8,905,444,871,951,038/79,729,089.20
  6. Step 6: Final answer
    x = 111,696,307.60

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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.