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Finding the Fourth Proportional to 86,407.81, 119,242.79 and 46,663.81

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Solution

The fourth proportional to 86,407.81, 119,242.79 and 46,663.81 is: 64,396.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,407.81 : 119,242.79 = 46,663.81 : x
  2. Step 2: Convert to fraction form
    86,407.81/119,242.79 = 46,663.81/x
  3. Step 3: Cross multiply
    86,407.81x = 119,242.79 × 46,663.81
  4. Step 4: Simplify right side
    86,407.81x = 5,564,323,019.55
  5. Step 5: Solve for x
    x = 5,564,323,019.55/86,407.81
  6. Step 6: Final answer
    x = 64,396.06

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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.