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Finding the Fourth Proportional to 74,469.40, 102,724.76 and 47,235.10

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Solution

The fourth proportional to 74,469.40, 102,724.76 and 47,235.10 is: 65,157.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,469.40 : 102,724.76 = 47,235.10 : x
  2. Step 2: Convert to fraction form
    74,469.40/102,724.76 = 47,235.10/x
  3. Step 3: Cross multiply
    74,469.40x = 102,724.76 × 47,235.10
  4. Step 4: Simplify right side
    74,469.40x = 4,852,214,099.26
  5. Step 5: Solve for x
    x = 4,852,214,099.26/74,469.40
  6. Step 6: Final answer
    x = 65,157.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.