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Finding the Fourth Proportional to 83,666.88, 115,362.72 and 62,409.24

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Solution

The fourth proportional to 83,666.88, 115,362.72 and 62,409.24 is: 86,051.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,666.88 : 115,362.72 = 62,409.24 : x
  2. Step 2: Convert to fraction form
    83,666.88/115,362.72 = 62,409.24/x
  3. Step 3: Cross multiply
    83,666.88x = 115,362.72 × 62,409.24
  4. Step 4: Simplify right side
    83,666.88x = 7,199,699,679.53
  5. Step 5: Solve for x
    x = 7,199,699,679.53/83,666.88
  6. Step 6: Final answer
    x = 86,051.97

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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.