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Finding the Fourth Proportional to 472,419.78, 708,255.45 and 235,640.58

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Solution

The fourth proportional to 472,419.78, 708,255.45 and 235,640.58 is: 353,274.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,419.78 : 708,255.45 = 235,640.58 : x
  2. Step 2: Convert to fraction form
    472,419.78/708,255.45 = 235,640.58/x
  3. Step 3: Cross multiply
    472,419.78x = 708,255.45 × 235,640.58
  4. Step 4: Simplify right side
    472,419.78x = 166,893,725,026.16
  5. Step 5: Solve for x
    x = 166,893,725,026.16/472,419.78
  6. Step 6: Final answer
    x = 353,274.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.