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Finding the Fourth Proportional to 120,155,907.70, 168,600,908.30 and 120,155,907.70

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Solution

The fourth proportional to 120,155,907.70, 168,600,908.30 and 120,155,907.70 is: 168,600,908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,155,907.70 : 168,600,908.30 = 120,155,907.70 : x
  2. Step 2: Convert to fraction form
    120,155,907.70/168,600,908.30 = 120,155,907.70/x
  3. Step 3: Cross multiply
    120,155,907.70x = 168,600,908.30 × 120,155,907.70
  4. Step 4: Simplify right side
    120,155,907.70x = 20,258,395,175,830,964
  5. Step 5: Solve for x
    x = 20,258,395,175,830,964/120,155,907.70
  6. Step 6: Final answer
    x = 168,600,908.30

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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.