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Finding the Fourth Proportional to 111,430.92, 165,988.23 and 105,394.68

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Solution

The fourth proportional to 111,430.92, 165,988.23 and 105,394.68 is: 156,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,430.92 : 165,988.23 = 105,394.68 : x
  2. Step 2: Convert to fraction form
    111,430.92/165,988.23 = 105,394.68/x
  3. Step 3: Cross multiply
    111,430.92x = 165,988.23 × 105,394.68
  4. Step 4: Simplify right side
    111,430.92x = 17,494,276,384.62
  5. Step 5: Solve for x
    x = 17,494,276,384.62/111,430.92
  6. Step 6: Final answer
    x = 156,996.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.