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Finding the Fourth Proportional to 47,661.40, 71,405.70 and 38,848.60

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Solution

The fourth proportional to 47,661.40, 71,405.70 and 38,848.60 is: 58,202.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,661.40 : 71,405.70 = 38,848.60 : x
  2. Step 2: Convert to fraction form
    47,661.40/71,405.70 = 38,848.60/x
  3. Step 3: Cross multiply
    47,661.40x = 71,405.70 × 38,848.60
  4. Step 4: Simplify right side
    47,661.40x = 2,774,011,477.02
  5. Step 5: Solve for x
    x = 2,774,011,477.02/47,661.40
  6. Step 6: Final answer
    x = 58,202.48

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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.