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Finding the Fourth Proportional to 70,475.70, 105,598.35 and 58,725.30

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Solution

The fourth proportional to 70,475.70, 105,598.35 and 58,725.30 is: 87,991.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,475.70 : 105,598.35 = 58,725.30 : x
  2. Step 2: Convert to fraction form
    70,475.70/105,598.35 = 58,725.30/x
  3. Step 3: Cross multiply
    70,475.70x = 105,598.35 × 58,725.30
  4. Step 4: Simplify right side
    70,475.70x = 6,201,294,783.26
  5. Step 5: Solve for x
    x = 6,201,294,783.26/70,475.70
  6. Step 6: Final answer
    x = 87,991.96

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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.