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Finding the Fourth Proportional to 638,781.01, 881,511.12 and 352,294.94

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Solution

The fourth proportional to 638,781.01, 881,511.12 and 352,294.94 is: 486,163.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,781.01 : 881,511.12 = 352,294.94 : x
  2. Step 2: Convert to fraction form
    638,781.01/881,511.12 = 352,294.94/x
  3. Step 3: Cross multiply
    638,781.01x = 881,511.12 × 352,294.94
  4. Step 4: Simplify right side
    638,781.01x = 310,551,909,333.51
  5. Step 5: Solve for x
    x = 310,551,909,333.51/638,781.01
  6. Step 6: Final answer
    x = 486,163.34

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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.