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Finding the Fourth Proportional to 504,409.92, 696,090.40 and 278,063.52

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Solution

The fourth proportional to 504,409.92, 696,090.40 and 278,063.52 is: 383,730.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,409.92 : 696,090.40 = 278,063.52 : x
  2. Step 2: Convert to fraction form
    504,409.92/696,090.40 = 278,063.52/x
  3. Step 3: Cross multiply
    504,409.92x = 696,090.40 × 278,063.52
  4. Step 4: Simplify right side
    504,409.92x = 193,557,346,862.21
  5. Step 5: Solve for x
    x = 193,557,346,862.21/504,409.92
  6. Step 6: Final answer
    x = 383,730.25

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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.