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Finding the Fourth Proportional to 347,009.40, 520,514.10 and 169,630.20

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Solution

The fourth proportional to 347,009.40, 520,514.10 and 169,630.20 is: 254,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,009.40 : 520,514.10 = 169,630.20 : x
  2. Step 2: Convert to fraction form
    347,009.40/520,514.10 = 169,630.20/x
  3. Step 3: Cross multiply
    347,009.40x = 520,514.10 × 169,630.20
  4. Step 4: Simplify right side
    347,009.40x = 88,294,910,885.82
  5. Step 5: Solve for x
    x = 88,294,910,885.82/347,009.40
  6. Step 6: Final answer
    x = 254,445.30

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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.