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Finding the Fourth Proportional to 86,069.32, 118,742.36 and 63,461.81

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Solution

The fourth proportional to 86,069.32, 118,742.36 and 63,461.81 is: 87,552.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,069.32 : 118,742.36 = 63,461.81 : x
  2. Step 2: Convert to fraction form
    86,069.32/118,742.36 = 63,461.81/x
  3. Step 3: Cross multiply
    86,069.32x = 118,742.36 × 63,461.81
  4. Step 4: Simplify right side
    86,069.32x = 7,535,605,068.82
  5. Step 5: Solve for x
    x = 7,535,605,068.82/86,069.32
  6. Step 6: Final answer
    x = 87,552.75

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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.