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Finding the Fourth Proportional to 99,303.90, 148,959.45 and 29,190.30

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Solution

The fourth proportional to 99,303.90, 148,959.45 and 29,190.30 is: 43,786.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,303.90 : 148,959.45 = 29,190.30 : x
  2. Step 2: Convert to fraction form
    99,303.90/148,959.45 = 29,190.30/x
  3. Step 3: Cross multiply
    99,303.90x = 148,959.45 × 29,190.30
  4. Step 4: Simplify right side
    99,303.90x = 4,348,171,033.34
  5. Step 5: Solve for x
    x = 4,348,171,033.34/99,303.90
  6. Step 6: Final answer
    x = 43,786.51

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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.