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Finding the Fourth Proportional to 255,898.71, 353,205.09 and 148,455.18

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Solution

The fourth proportional to 255,898.71, 353,205.09 and 148,455.18 is: 204,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,898.71 : 353,205.09 = 148,455.18 : x
  2. Step 2: Convert to fraction form
    255,898.71/353,205.09 = 148,455.18/x
  3. Step 3: Cross multiply
    255,898.71x = 353,205.09 × 148,455.18
  4. Step 4: Simplify right side
    255,898.71x = 52,435,125,212.87
  5. Step 5: Solve for x
    x = 52,435,125,212.87/255,898.71
  6. Step 6: Final answer
    x = 204,905.78

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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.