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Finding the Fourth Proportional to 287,510.54, 396,767.25 and 158,453.67

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Solution

The fourth proportional to 287,510.54, 396,767.25 and 158,453.67 is: 218,667.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,510.54 : 396,767.25 = 158,453.67 : x
  2. Step 2: Convert to fraction form
    287,510.54/396,767.25 = 158,453.67/x
  3. Step 3: Cross multiply
    287,510.54x = 396,767.25 × 158,453.67
  4. Step 4: Simplify right side
    287,510.54x = 62,869,226,934.26
  5. Step 5: Solve for x
    x = 62,869,226,934.26/287,510.54
  6. Step 6: Final answer
    x = 218,667.56

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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.