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Finding the Fourth Proportional to 223,805.04, 308,832.12 and 128,289.84

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Solution

The fourth proportional to 223,805.04, 308,832.12 and 128,289.84 is: 177,029.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,805.04 : 308,832.12 = 128,289.84 : x
  2. Step 2: Convert to fraction form
    223,805.04/308,832.12 = 128,289.84/x
  3. Step 3: Cross multiply
    223,805.04x = 308,832.12 × 128,289.84
  4. Step 4: Simplify right side
    223,805.04x = 39,620,023,261.66
  5. Step 5: Solve for x
    x = 39,620,023,261.66/223,805.04
  6. Step 6: Final answer
    x = 177,029.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.