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Finding the Fourth Proportional to 28,364.42, 42,546.62 and 7,587.38

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Solution

The fourth proportional to 28,364.42, 42,546.62 and 7,587.38 is: 11,381.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.42 : 42,546.62 = 7,587.38 : x
  2. Step 2: Convert to fraction form
    28,364.42/42,546.62 = 7,587.38/x
  3. Step 3: Cross multiply
    28,364.42x = 42,546.62 × 7,587.38
  4. Step 4: Simplify right side
    28,364.42x = 322,817,179.89
  5. Step 5: Solve for x
    x = 322,817,179.89/28,364.42
  6. Step 6: Final answer
    x = 11,381.06

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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.