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Finding the Fourth Proportional to 86,615.45, 119,529.68 and 46,871.45

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Solution

The fourth proportional to 86,615.45, 119,529.68 and 46,871.45 is: 64,682.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,615.45 : 119,529.68 = 46,871.45 : x
  2. Step 2: Convert to fraction form
    86,615.45/119,529.68 = 46,871.45/x
  3. Step 3: Cross multiply
    86,615.45x = 119,529.68 × 46,871.45
  4. Step 4: Simplify right side
    86,615.45x = 5,602,528,587.63
  5. Step 5: Solve for x
    x = 5,602,528,587.63/86,615.45
  6. Step 6: Final answer
    x = 64,682.79

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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.