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Finding the Fourth Proportional to 519,665.01, 717,208.89 and 290,236.40

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Solution

The fourth proportional to 519,665.01, 717,208.89 and 290,236.40 is: 400,565.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,665.01 : 717,208.89 = 290,236.40 : x
  2. Step 2: Convert to fraction form
    519,665.01/717,208.89 = 290,236.40/x
  3. Step 3: Cross multiply
    519,665.01x = 717,208.89 × 290,236.40
  4. Step 4: Simplify right side
    519,665.01x = 208,160,126,281.60
  5. Step 5: Solve for x
    x = 208,160,126,281.60/519,665.01
  6. Step 6: Final answer
    x = 400,565.98

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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.