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Finding the Fourth Proportional to 717,330.39, 989,883.96 and 411,187.25

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Solution

The fourth proportional to 717,330.39, 989,883.96 and 411,187.25 is: 567,420.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,330.39 : 989,883.96 = 411,187.25 : x
  2. Step 2: Convert to fraction form
    717,330.39/989,883.96 = 411,187.25/x
  3. Step 3: Cross multiply
    717,330.39x = 989,883.96 × 411,187.25
  4. Step 4: Simplify right side
    717,330.39x = 407,027,658,382.09
  5. Step 5: Solve for x
    x = 407,027,658,382.09/717,330.39
  6. Step 6: Final answer
    x = 567,420.07

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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.