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Finding the Fourth Proportional to 168,404.81, 232,392.83 and 100,386.68

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Solution

The fourth proportional to 168,404.81, 232,392.83 and 100,386.68 is: 138,530.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,404.81 : 232,392.83 = 100,386.68 : x
  2. Step 2: Convert to fraction form
    168,404.81/232,392.83 = 100,386.68/x
  3. Step 3: Cross multiply
    168,404.81x = 232,392.83 × 100,386.68
  4. Step 4: Simplify right side
    168,404.81x = 23,329,142,995.61
  5. Step 5: Solve for x
    x = 23,329,142,995.61/168,404.81
  6. Step 6: Final answer
    x = 138,530.15

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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.