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Finding the Fourth Proportional to 8,590.95, 12,886.25 and 4,644.09

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Solution

The fourth proportional to 8,590.95, 12,886.25 and 4,644.09 is: 6,966.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.95 : 12,886.25 = 4,644.09 : x
  2. Step 2: Convert to fraction form
    8,590.95/12,886.25 = 4,644.09/x
  3. Step 3: Cross multiply
    8,590.95x = 12,886.25 × 4,644.09
  4. Step 4: Simplify right side
    8,590.95x = 59,844,881.54
  5. Step 5: Solve for x
    x = 59,844,881.54/8,590.95
  6. Step 6: Final answer
    x = 6,966.04

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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.