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Finding the Fourth Proportional to 717,066.06, 989,513.61 and 394,713.20

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Solution

The fourth proportional to 717,066.06, 989,513.61 and 394,713.20 is: 544,683.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,066.06 : 989,513.61 = 394,713.20 : x
  2. Step 2: Convert to fraction form
    717,066.06/989,513.61 = 394,713.20/x
  3. Step 3: Cross multiply
    717,066.06x = 989,513.61 × 394,713.20
  4. Step 4: Simplify right side
    717,066.06x = 390,574,080,729.59
  5. Step 5: Solve for x
    x = 390,574,080,729.59/717,066.06
  6. Step 6: Final answer
    x = 544,683.54

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Double scale
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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.