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Finding the Fourth Proportional to 255,817.94, 353,167.17 and 153,866.16

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Solution

The fourth proportional to 255,817.94, 353,167.17 and 153,866.16 is: 212,418.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,817.94 : 353,167.17 = 153,866.16 : x
  2. Step 2: Convert to fraction form
    255,817.94/353,167.17 = 153,866.16/x
  3. Step 3: Cross multiply
    255,817.94x = 353,167.17 × 153,866.16
  4. Step 4: Simplify right side
    255,817.94x = 54,340,475,516.64
  5. Step 5: Solve for x
    x = 54,340,475,516.64/255,817.94
  6. Step 6: Final answer
    x = 212,418.55

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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.