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Finding the Fourth Proportional to 639,512.80, 882,533.70 and 353,026.72

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Solution

The fourth proportional to 639,512.80, 882,533.70 and 353,026.72 is: 487,180.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,512.80 : 882,533.70 = 353,026.72 : x
  2. Step 2: Convert to fraction form
    639,512.80/882,533.70 = 353,026.72/x
  3. Step 3: Cross multiply
    639,512.80x = 882,533.70 × 353,026.72
  4. Step 4: Simplify right side
    639,512.80x = 311,557,977,400.46
  5. Step 5: Solve for x
    x = 311,557,977,400.46/639,512.80
  6. Step 6: Final answer
    x = 487,180.21

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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.