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Finding the Fourth Proportional to 157,633.69, 217,532.68 and 86,014.91

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Solution

The fourth proportional to 157,633.69, 217,532.68 and 86,014.91 is: 118,699.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,633.69 : 217,532.68 = 86,014.91 : x
  2. Step 2: Convert to fraction form
    157,633.69/217,532.68 = 86,014.91/x
  3. Step 3: Cross multiply
    157,633.69x = 217,532.68 × 86,014.91
  4. Step 4: Simplify right side
    157,633.69x = 18,711,052,804.60
  5. Step 5: Solve for x
    x = 18,711,052,804.60/157,633.69
  6. Step 6: Final answer
    x = 118,699.58

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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.