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Finding the Fourth Proportional to 99,907.40, 149,918.70 and 37,622.60

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Solution

The fourth proportional to 99,907.40, 149,918.70 and 37,622.60 is: 56,455.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,907.40 : 149,918.70 = 37,622.60 : x
  2. Step 2: Convert to fraction form
    99,907.40/149,918.70 = 37,622.60/x
  3. Step 3: Cross multiply
    99,907.40x = 149,918.70 × 37,622.60
  4. Step 4: Simplify right side
    99,907.40x = 5,640,331,282.62
  5. Step 5: Solve for x
    x = 5,640,331,282.62/99,907.40
  6. Step 6: Final answer
    x = 56,455.59

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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.