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Finding the Fourth Proportional to 235,995.93, 325,673.10 and 128,565.70

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Solution

The fourth proportional to 235,995.93, 325,673.10 and 128,565.70 is: 177,419.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,995.93 : 325,673.10 = 128,565.70 : x
  2. Step 2: Convert to fraction form
    235,995.93/325,673.10 = 128,565.70/x
  3. Step 3: Cross multiply
    235,995.93x = 325,673.10 × 128,565.70
  4. Step 4: Simplify right side
    235,995.93x = 41,870,390,072.67
  5. Step 5: Solve for x
    x = 41,870,390,072.67/235,995.93
  6. Step 6: Final answer
    x = 177,419.97

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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.