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Finding the Fourth Proportional to 109,731.70, 151,429.75 and 59,430.70

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Solution

The fourth proportional to 109,731.70, 151,429.75 and 59,430.70 is: 82,014.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,731.70 : 151,429.75 = 59,430.70 : x
  2. Step 2: Convert to fraction form
    109,731.70/151,429.75 = 59,430.70/x
  3. Step 3: Cross multiply
    109,731.70x = 151,429.75 × 59,430.70
  4. Step 4: Simplify right side
    109,731.70x = 8,999,576,043.33
  5. Step 5: Solve for x
    x = 8,999,576,043.33/109,731.70
  6. Step 6: Final answer
    x = 82,014.37

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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.