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Finding the Fourth Proportional to 7,173.60, 10,686.42 and 6,955.98

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Solution

The fourth proportional to 7,173.60, 10,686.42 and 6,955.98 is: 10,362.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.60 : 10,686.42 = 6,955.98 : x
  2. Step 2: Convert to fraction form
    7,173.60/10,686.42 = 6,955.98/x
  3. Step 3: Cross multiply
    7,173.60x = 10,686.42 × 6,955.98
  4. Step 4: Simplify right side
    7,173.60x = 74,334,523.79
  5. Step 5: Solve for x
    x = 74,334,523.79/7,173.60
  6. Step 6: Final answer
    x = 10,362.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.