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Finding the Fourth Proportional to 422,545.32, 583,117.14 and 231,554.64

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Solution

The fourth proportional to 422,545.32, 583,117.14 and 231,554.64 is: 319,547.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,545.32 : 583,117.14 = 231,554.64 : x
  2. Step 2: Convert to fraction form
    422,545.32/583,117.14 = 231,554.64/x
  3. Step 3: Cross multiply
    422,545.32x = 583,117.14 × 231,554.64
  4. Step 4: Simplify right side
    422,545.32x = 135,023,479,430.53
  5. Step 5: Solve for x
    x = 135,023,479,430.53/422,545.32
  6. Step 6: Final answer
    x = 319,547.92

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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.