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Finding the Fourth Proportional to 216,840.60, 325,260.90 and 76,613.40

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Solution

The fourth proportional to 216,840.60, 325,260.90 and 76,613.40 is: 114,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,840.60 : 325,260.90 = 76,613.40 : x
  2. Step 2: Convert to fraction form
    216,840.60/325,260.90 = 76,613.40/x
  3. Step 3: Cross multiply
    216,840.60x = 325,260.90 × 76,613.40
  4. Step 4: Simplify right side
    216,840.60x = 24,919,343,436.06
  5. Step 5: Solve for x
    x = 24,919,343,436.06/216,840.60
  6. Step 6: Final answer
    x = 114,920.10

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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.