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Finding the Fourth Proportional to 100,809,220.30, 151,213,830.45 and 100,809,220.30

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Solution

The fourth proportional to 100,809,220.30, 151,213,830.45 and 100,809,220.30 is: 151,213,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,809,220.30 : 151,213,830.45 = 100,809,220.30 : x
  2. Step 2: Convert to fraction form
    100,809,220.30/151,213,830.45 = 100,809,220.30/x
  3. Step 3: Cross multiply
    100,809,220.30x = 151,213,830.45 × 100,809,220.30
  4. Step 4: Simplify right side
    100,809,220.30x = 15,243,748,346,240,896
  5. Step 5: Solve for x
    x = 15,243,748,346,240,896/100,809,220.30
  6. Step 6: Final answer
    x = 151,213,830.45

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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.