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Finding the Fourth Proportional to 8,784.60, 12,126.06 and 5,246.52

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Solution

The fourth proportional to 8,784.60, 12,126.06 and 5,246.52 is: 7,242.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.60 : 12,126.06 = 5,246.52 : x
  2. Step 2: Convert to fraction form
    8,784.60/12,126.06 = 5,246.52/x
  3. Step 3: Cross multiply
    8,784.60x = 12,126.06 × 5,246.52
  4. Step 4: Simplify right side
    8,784.60x = 63,619,616.31
  5. Step 5: Solve for x
    x = 63,619,616.31/8,784.60
  6. Step 6: Final answer
    x = 7,242.18

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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.