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Finding the Fourth Proportional to 100,872,031.85, 151,308,047.78 and 100,872,031.85

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Solution

The fourth proportional to 100,872,031.85, 151,308,047.78 and 100,872,031.85 is: 151,308,047.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,872,031.85 : 151,308,047.78 = 100,872,031.85 : x
  2. Step 2: Convert to fraction form
    100,872,031.85/151,308,047.78 = 100,872,031.85/x
  3. Step 3: Cross multiply
    100,872,031.85x = 151,308,047.78 × 100,872,031.85
  4. Step 4: Simplify right side
    100,872,031.85x = 15,262,750,214,321,122
  5. Step 5: Solve for x
    x = 15,262,750,214,321,122/100,872,031.85
  6. Step 6: Final answer
    x = 151,308,047.78

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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.