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Finding the Fourth Proportional to 303,139.16, 418,326.51 and 167,185.66

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Solution

The fourth proportional to 303,139.16, 418,326.51 and 167,185.66 is: 230,713.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,139.16 : 418,326.51 = 167,185.66 : x
  2. Step 2: Convert to fraction form
    303,139.16/418,326.51 = 167,185.66/x
  3. Step 3: Cross multiply
    303,139.16x = 418,326.51 × 167,185.66
  4. Step 4: Simplify right side
    303,139.16x = 69,938,193,669.85
  5. Step 5: Solve for x
    x = 69,938,193,669.85/303,139.16
  6. Step 6: Final answer
    x = 230,713.16

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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.