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Finding the Fourth Proportional to 322,338.51, 483,507.23 and 85,681.19

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Solution

The fourth proportional to 322,338.51, 483,507.23 and 85,681.19 is: 128,521.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,338.51 : 483,507.23 = 85,681.19 : x
  2. Step 2: Convert to fraction form
    322,338.51/483,507.23 = 85,681.19/x
  3. Step 3: Cross multiply
    322,338.51x = 483,507.23 × 85,681.19
  4. Step 4: Simplify right side
    322,338.51x = 41,427,471,994.06
  5. Step 5: Solve for x
    x = 41,427,471,994.06/322,338.51
  6. Step 6: Final answer
    x = 128,521.64

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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.