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Finding the Fourth Proportional to 717,066.58, 989,514.32 and 394,713.72

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Solution

The fourth proportional to 717,066.58, 989,514.32 and 394,713.72 is: 544,684.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,066.58 : 989,514.32 = 394,713.72 : x
  2. Step 2: Convert to fraction form
    717,066.58/989,514.32 = 394,713.72/x
  3. Step 3: Cross multiply
    717,066.58x = 989,514.32 × 394,713.72
  4. Step 4: Simplify right side
    717,066.58x = 390,574,872,556.22
  5. Step 5: Solve for x
    x = 390,574,872,556.22/717,066.58
  6. Step 6: Final answer
    x = 544,684.25

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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.