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Finding the Fourth Proportional to 47,081.70, 70,633.40 and 13,804.32

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Solution

The fourth proportional to 47,081.70, 70,633.40 and 13,804.32 is: 20,709.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,081.70 : 70,633.40 = 13,804.32 : x
  2. Step 2: Convert to fraction form
    47,081.70/70,633.40 = 13,804.32/x
  3. Step 3: Cross multiply
    47,081.70x = 70,633.40 × 13,804.32
  4. Step 4: Simplify right side
    47,081.70x = 975,046,056.29
  5. Step 5: Solve for x
    x = 975,046,056.29/47,081.70
  6. Step 6: Final answer
    x = 20,709.66

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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.