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Finding the Fourth Proportional to 100,605,324.80, 150,907,987.20 and 49,586,988.80

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Solution

The fourth proportional to 100,605,324.80, 150,907,987.20 and 49,586,988.80 is: 74,380,483.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,605,324.80 : 150,907,987.20 = 49,586,988.80 : x
  2. Step 2: Convert to fraction form
    100,605,324.80/150,907,987.20 = 49,586,988.80/x
  3. Step 3: Cross multiply
    100,605,324.80x = 150,907,987.20 × 49,586,988.80
  4. Step 4: Simplify right side
    100,605,324.80x = 7,483,072,671,116,942
  5. Step 5: Solve for x
    x = 7,483,072,671,116,942/100,605,324.80
  6. Step 6: Final answer
    x = 74,380,483.20

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1.5x scale

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.