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Finding the Fourth Proportional to 186,344.69, 257,158.78 and 105,774.68

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Solution

The fourth proportional to 186,344.69, 257,158.78 and 105,774.68 is: 145,970.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,344.69 : 257,158.78 = 105,774.68 : x
  2. Step 2: Convert to fraction form
    186,344.69/257,158.78 = 105,774.68/x
  3. Step 3: Cross multiply
    186,344.69x = 257,158.78 × 105,774.68
  4. Step 4: Simplify right side
    186,344.69x = 27,200,888,042.15
  5. Step 5: Solve for x
    x = 27,200,888,042.15/186,344.69
  6. Step 6: Final answer
    x = 145,970.83

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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.