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Finding the Fourth Proportional to 717,066.95, 989,514.83 and 394,714.09

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Solution

The fourth proportional to 717,066.95, 989,514.83 and 394,714.09 is: 544,684.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,066.95 : 989,514.83 = 394,714.09 : x
  2. Step 2: Convert to fraction form
    717,066.95/989,514.83 = 394,714.09/x
  3. Step 3: Cross multiply
    717,066.95x = 989,514.83 × 394,714.09
  4. Step 4: Simplify right side
    717,066.95x = 390,575,444,177.95
  5. Step 5: Solve for x
    x = 390,575,444,177.95/717,066.95
  6. Step 6: Final answer
    x = 544,684.76

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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.