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Finding the Fourth Proportional to 322,502.16, 445,017.60 and 186,538.80

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Solution

The fourth proportional to 322,502.16, 445,017.60 and 186,538.80 is: 257,403.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,502.16 : 445,017.60 = 186,538.80 : x
  2. Step 2: Convert to fraction form
    322,502.16/445,017.60 = 186,538.80/x
  3. Step 3: Cross multiply
    322,502.16x = 445,017.60 × 186,538.80
  4. Step 4: Simplify right side
    322,502.16x = 83,013,049,082.88
  5. Step 5: Solve for x
    x = 83,013,049,082.88/322,502.16
  6. Step 6: Final answer
    x = 257,403.08

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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.