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Finding the Fourth Proportional to 79,730,003.20, 111,697,587.20 and 79,730,003.20

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Solution

The fourth proportional to 79,730,003.20, 111,697,587.20 and 79,730,003.20 is: 111,697,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,730,003.20 : 111,697,587.20 = 79,730,003.20 : x
  2. Step 2: Convert to fraction form
    79,730,003.20/111,697,587.20 = 79,730,003.20/x
  3. Step 3: Cross multiply
    79,730,003.20x = 111,697,587.20 × 79,730,003.20
  4. Step 4: Simplify right side
    79,730,003.20x = 8,905,648,984,888,280
  5. Step 5: Solve for x
    x = 8,905,648,984,888,280/79,730,003.20
  6. Step 6: Final answer
    x = 111,697,587.20

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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.