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Finding the Fourth Proportional to 70,148.10, 105,185.22 and 47,967.84

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Solution

The fourth proportional to 70,148.10, 105,185.22 and 47,967.84 is: 71,926.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,148.10 : 105,185.22 = 47,967.84 : x
  2. Step 2: Convert to fraction form
    70,148.10/105,185.22 = 47,967.84/x
  3. Step 3: Cross multiply
    70,148.10x = 105,185.22 × 47,967.84
  4. Step 4: Simplify right side
    70,148.10x = 5,045,507,803.32
  5. Step 5: Solve for x
    x = 5,045,507,803.32/70,148.10
  6. Step 6: Final answer
    x = 71,926.51

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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.