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Finding the Fourth Proportional to 86,812.88, 119,788.68 and 52,803.92

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Solution

The fourth proportional to 86,812.88, 119,788.68 and 52,803.92 is: 72,861.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,812.88 : 119,788.68 = 52,803.92 : x
  2. Step 2: Convert to fraction form
    86,812.88/119,788.68 = 52,803.92/x
  3. Step 3: Cross multiply
    86,812.88x = 119,788.68 × 52,803.92
  4. Step 4: Simplify right side
    86,812.88x = 6,325,311,875.63
  5. Step 5: Solve for x
    x = 6,325,311,875.63/86,812.88
  6. Step 6: Final answer
    x = 72,861.44

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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.