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Finding the Fourth Proportional to 86,656.80, 119,586.68 and 46,912.80

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Solution

The fourth proportional to 86,656.80, 119,586.68 and 46,912.80 is: 64,739.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,656.80 : 119,586.68 = 46,912.80 : x
  2. Step 2: Convert to fraction form
    86,656.80/119,586.68 = 46,912.80/x
  3. Step 3: Cross multiply
    86,656.80x = 119,586.68 × 46,912.80
  4. Step 4: Simplify right side
    86,656.80x = 5,610,146,001.50
  5. Step 5: Solve for x
    x = 5,610,146,001.50/86,656.80
  6. Step 6: Final answer
    x = 64,739.82

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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.