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Finding the Fourth Proportional to 86,893.61, 119,967.35 and 66,710.30

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Solution

The fourth proportional to 86,893.61, 119,967.35 and 66,710.30 is: 92,101.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,893.61 : 119,967.35 = 66,710.30 : x
  2. Step 2: Convert to fraction form
    86,893.61/119,967.35 = 66,710.30/x
  3. Step 3: Cross multiply
    86,893.61x = 119,967.35 × 66,710.30
  4. Step 4: Simplify right side
    86,893.61x = 8,003,056,975.32
  5. Step 5: Solve for x
    x = 8,003,056,975.32/86,893.61
  6. Step 6: Final answer
    x = 92,101.79

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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.