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Finding the Fourth Proportional to 47,293.40, 70,940.10 and 43,299.80

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Solution

The fourth proportional to 47,293.40, 70,940.10 and 43,299.80 is: 64,949.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,293.40 : 70,940.10 = 43,299.80 : x
  2. Step 2: Convert to fraction form
    47,293.40/70,940.10 = 43,299.80/x
  3. Step 3: Cross multiply
    47,293.40x = 70,940.10 × 43,299.80
  4. Step 4: Simplify right side
    47,293.40x = 3,071,692,141.98
  5. Step 5: Solve for x
    x = 3,071,692,141.98/47,293.40
  6. Step 6: Final answer
    x = 64,949.70

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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.