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Finding the Fourth Proportional to 86,208.70, 119,042.76 and 63,586.90

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Solution

The fourth proportional to 86,208.70, 119,042.76 and 63,586.90 is: 87,805.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,208.70 : 119,042.76 = 63,586.90 : x
  2. Step 2: Convert to fraction form
    86,208.70/119,042.76 = 63,586.90/x
  3. Step 3: Cross multiply
    86,208.70x = 119,042.76 × 63,586.90
  4. Step 4: Simplify right side
    86,208.70x = 7,569,560,075.84
  5. Step 5: Solve for x
    x = 7,569,560,075.84/86,208.70
  6. Step 6: Final answer
    x = 87,805.06

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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.