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Finding the Fourth Proportional to 70,439.31, 105,663.15 and 23,059.32

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Solution

The fourth proportional to 70,439.31, 105,663.15 and 23,059.32 is: 34,590.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,439.31 : 105,663.15 = 23,059.32 : x
  2. Step 2: Convert to fraction form
    70,439.31/105,663.15 = 23,059.32/x
  3. Step 3: Cross multiply
    70,439.31x = 105,663.15 × 23,059.32
  4. Step 4: Simplify right side
    70,439.31x = 2,436,520,388.06
  5. Step 5: Solve for x
    x = 2,436,520,388.06/70,439.31
  6. Step 6: Final answer
    x = 34,590.35

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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.