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Finding the Fourth Proportional to 257,166.15, 354,931.34 and 153,793.59

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Solution

The fourth proportional to 257,166.15, 354,931.34 and 153,793.59 is: 212,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,166.15 : 354,931.34 = 153,793.59 : x
  2. Step 2: Convert to fraction form
    257,166.15/354,931.34 = 153,793.59/x
  3. Step 3: Cross multiply
    257,166.15x = 354,931.34 × 153,793.59
  4. Step 4: Simplify right side
    257,166.15x = 54,586,164,213.14
  5. Step 5: Solve for x
    x = 54,586,164,213.14/257,166.15
  6. Step 6: Final answer
    x = 212,260.30

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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.