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Finding the Fourth Proportional to 86,690.92, 119,567.10 and 59,878.30

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Solution

The fourth proportional to 86,690.92, 119,567.10 and 59,878.30 is: 82,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,690.92 : 119,567.10 = 59,878.30 : x
  2. Step 2: Convert to fraction form
    86,690.92/119,567.10 = 59,878.30/x
  3. Step 3: Cross multiply
    86,690.92x = 119,567.10 × 59,878.30
  4. Step 4: Simplify right side
    86,690.92x = 7,159,474,683.93
  5. Step 5: Solve for x
    x = 7,159,474,683.93/86,690.92
  6. Step 6: Final answer
    x = 82,586.21

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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.