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Finding the Fourth Proportional to 936,819, 1,292,985.36 and 534,411

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Solution

The fourth proportional to 936,819, 1,292,985.36 and 534,411 is: 737,587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,819 : 1,292,985.36 = 534,411 : x
  2. Step 2: Convert to fraction form
    936,819/1,292,985.36 = 534,411/x
  3. Step 3: Cross multiply
    936,819x = 1,292,985.36 × 534,411
  4. Step 4: Simplify right side
    936,819x = 690,985,599,222.96
  5. Step 5: Solve for x
    x = 690,985,599,222.96/936,819
  6. Step 6: Final answer
    x = 737,587.09

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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.