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Finding the Fourth Proportional to 101,376,660.40, 152,064,990.60 and 100,480,865.20

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Solution

The fourth proportional to 101,376,660.40, 152,064,990.60 and 100,480,865.20 is: 150,721,297.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,376,660.40 : 152,064,990.60 = 100,480,865.20 : x
  2. Step 2: Convert to fraction form
    101,376,660.40/152,064,990.60 = 100,480,865.20/x
  3. Step 3: Cross multiply
    101,376,660.40x = 152,064,990.60 × 100,480,865.20
  4. Step 4: Simplify right side
    101,376,660.40x = 15,279,621,822,117,866
  5. Step 5: Solve for x
    x = 15,279,621,822,117,866/101,376,660.40
  6. Step 6: Final answer
    x = 150,721,297.80

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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.