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Finding the Fourth Proportional to 37,083.60, 55,630.80 and 12,117.60

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Solution

The fourth proportional to 37,083.60, 55,630.80 and 12,117.60 is: 18,178.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,083.60 : 55,630.80 = 12,117.60 : x
  2. Step 2: Convert to fraction form
    37,083.60/55,630.80 = 12,117.60/x
  3. Step 3: Cross multiply
    37,083.60x = 55,630.80 × 12,117.60
  4. Step 4: Simplify right side
    37,083.60x = 674,111,782.08
  5. Step 5: Solve for x
    x = 674,111,782.08/37,083.60
  6. Step 6: Final answer
    x = 18,178.16

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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.