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Finding the Fourth Proportional to 719,307.35, 992,573.42 and 396,996.66

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Solution

The fourth proportional to 719,307.35, 992,573.42 and 396,996.66 is: 547,816.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,307.35 : 992,573.42 = 396,996.66 : x
  2. Step 2: Convert to fraction form
    719,307.35/992,573.42 = 396,996.66/x
  3. Step 3: Cross multiply
    719,307.35x = 992,573.42 × 396,996.66
  4. Step 4: Simplify right side
    719,307.35x = 394,048,330,559.79
  5. Step 5: Solve for x
    x = 394,048,330,559.79/719,307.35
  6. Step 6: Final answer
    x = 547,816.36

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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.