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Finding the Fourth Proportional to 86,070.32, 118,743.73 and 63,462.81

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Solution

The fourth proportional to 86,070.32, 118,743.73 and 63,462.81 is: 87,554.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,070.32 : 118,743.73 = 63,462.81 : x
  2. Step 2: Convert to fraction form
    86,070.32/118,743.73 = 63,462.81/x
  3. Step 3: Cross multiply
    86,070.32x = 118,743.73 × 63,462.81
  4. Step 4: Simplify right side
    86,070.32x = 7,535,810,775.68
  5. Step 5: Solve for x
    x = 7,535,810,775.68/86,070.32
  6. Step 6: Final answer
    x = 87,554.12

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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.