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Finding the Fourth Proportional to 18,587.60, 27,886.86 and 7,488.57

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Solution

The fourth proportional to 18,587.60, 27,886.86 and 7,488.57 is: 11,235.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.60 : 27,886.86 = 7,488.57 : x
  2. Step 2: Convert to fraction form
    18,587.60/27,886.86 = 7,488.57/x
  3. Step 3: Cross multiply
    18,587.60x = 27,886.86 × 7,488.57
  4. Step 4: Simplify right side
    18,587.60x = 208,832,703.19
  5. Step 5: Solve for x
    x = 208,832,703.19/18,587.60
  6. Step 6: Final answer
    x = 11,235.06

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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.