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Finding the Fourth Proportional to 218,976.66, 302,187.24 and 123,482.64

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Solution

The fourth proportional to 218,976.66, 302,187.24 and 123,482.64 is: 170,405.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,976.66 : 302,187.24 = 123,482.64 : x
  2. Step 2: Convert to fraction form
    218,976.66/302,187.24 = 123,482.64/x
  3. Step 3: Cross multiply
    218,976.66x = 302,187.24 × 123,482.64
  4. Step 4: Simplify right side
    218,976.66x = 37,314,878,169.51
  5. Step 5: Solve for x
    x = 37,314,878,169.51/218,976.66
  6. Step 6: Final answer
    x = 170,405.73

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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.