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Finding the Fourth Proportional to 216,390.71, 298,702.52 and 193,689.65

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Solution

The fourth proportional to 216,390.71, 298,702.52 and 193,689.65 is: 267,366.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,390.71 : 298,702.52 = 193,689.65 : x
  2. Step 2: Convert to fraction form
    216,390.71/298,702.52 = 193,689.65/x
  3. Step 3: Cross multiply
    216,390.71x = 298,702.52 × 193,689.65
  4. Step 4: Simplify right side
    216,390.71x = 57,855,585,584.47
  5. Step 5: Solve for x
    x = 57,855,585,584.47/216,390.71
  6. Step 6: Final answer
    x = 267,366.31

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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.