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Finding the Fourth Proportional to 86,581, 119,483.63 and 47,818.63

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Solution

The fourth proportional to 86,581, 119,483.63 and 47,818.63 is: 65,990.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,581 : 119,483.63 = 47,818.63 : x
  2. Step 2: Convert to fraction form
    86,581/119,483.63 = 47,818.63/x
  3. Step 3: Cross multiply
    86,581x = 119,483.63 × 47,818.63
  4. Step 4: Simplify right side
    86,581x = 5,713,543,494.03
  5. Step 5: Solve for x
    x = 5,713,543,494.03/86,581
  6. Step 6: Final answer
    x = 65,990.73

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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.