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Finding the Fourth Proportional to 638,552.26, 881,241.83 and 352,071.91

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Solution

The fourth proportional to 638,552.26, 881,241.83 and 352,071.91 is: 485,881.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,552.26 : 881,241.83 = 352,071.91 : x
  2. Step 2: Convert to fraction form
    638,552.26/881,241.83 = 352,071.91/x
  3. Step 3: Cross multiply
    638,552.26x = 881,241.83 × 352,071.91
  4. Step 4: Simplify right side
    638,552.26x = 310,260,494,260.00
  5. Step 5: Solve for x
    x = 310,260,494,260.00/638,552.26
  6. Step 6: Final answer
    x = 485,881.13

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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.