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Finding the Fourth Proportional to 15,920.13, 23,880.19 and 4,976.13

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Solution

The fourth proportional to 15,920.13, 23,880.19 and 4,976.13 is: 7,464.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.13 : 23,880.19 = 4,976.13 : x
  2. Step 2: Convert to fraction form
    15,920.13/23,880.19 = 4,976.13/x
  3. Step 3: Cross multiply
    15,920.13x = 23,880.19 × 4,976.13
  4. Step 4: Simplify right side
    15,920.13x = 118,830,929.86
  5. Step 5: Solve for x
    x = 118,830,929.86/15,920.13
  6. Step 6: Final answer
    x = 7,464.19

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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.