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Finding the Fourth Proportional to 47,095.80, 70,643.70 and 19,393.80

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Solution

The fourth proportional to 47,095.80, 70,643.70 and 19,393.80 is: 29,090.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,095.80 : 70,643.70 = 19,393.80 : x
  2. Step 2: Convert to fraction form
    47,095.80/70,643.70 = 19,393.80/x
  3. Step 3: Cross multiply
    47,095.80x = 70,643.70 × 19,393.80
  4. Step 4: Simplify right side
    47,095.80x = 1,370,049,789.06
  5. Step 5: Solve for x
    x = 1,370,049,789.06/47,095.80
  6. Step 6: Final answer
    x = 29,090.70

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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.