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Finding the Fourth Proportional to 9,173.66, 12,659.80 and 4,981.92

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Solution

The fourth proportional to 9,173.66, 12,659.80 and 4,981.92 is: 6,875.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,173.66 : 12,659.80 = 4,981.92 : x
  2. Step 2: Convert to fraction form
    9,173.66/12,659.80 = 4,981.92/x
  3. Step 3: Cross multiply
    9,173.66x = 12,659.80 × 4,981.92
  4. Step 4: Simplify right side
    9,173.66x = 63,070,110.82
  5. Step 5: Solve for x
    x = 63,070,110.82/9,173.66
  6. Step 6: Final answer
    x = 6,875.13

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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.