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Finding the Fourth Proportional to 86,856.58, 119,698.26 and 69,609.34

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Solution

The fourth proportional to 86,856.58, 119,698.26 and 69,609.34 is: 95,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,856.58 : 119,698.26 = 69,609.34 : x
  2. Step 2: Convert to fraction form
    86,856.58/119,698.26 = 69,609.34/x
  3. Step 3: Cross multiply
    86,856.58x = 119,698.26 × 69,609.34
  4. Step 4: Simplify right side
    86,856.58x = 8,332,116,877.75
  5. Step 5: Solve for x
    x = 8,332,116,877.75/86,856.58
  6. Step 6: Final answer
    x = 95,929.60

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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.