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Finding the Fourth Proportional to 15,168.55, 22,763.07 and 5,307.91

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Solution

The fourth proportional to 15,168.55, 22,763.07 and 5,307.91 is: 7,965.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.55 : 22,763.07 = 5,307.91 : x
  2. Step 2: Convert to fraction form
    15,168.55/22,763.07 = 5,307.91/x
  3. Step 3: Cross multiply
    15,168.55x = 22,763.07 × 5,307.91
  4. Step 4: Simplify right side
    15,168.55x = 120,824,313.61
  5. Step 5: Solve for x
    x = 120,824,313.61/15,168.55
  6. Step 6: Final answer
    x = 7,965.45

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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.