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Finding the Fourth Proportional to 339,886.08, 509,820.48 and 90,567.36

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Solution

The fourth proportional to 339,886.08, 509,820.48 and 90,567.36 is: 135,848.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,886.08 : 509,820.48 = 90,567.36 : x
  2. Step 2: Convert to fraction form
    339,886.08/509,820.48 = 90,567.36/x
  3. Step 3: Cross multiply
    339,886.08x = 509,820.48 × 90,567.36
  4. Step 4: Simplify right side
    339,886.08x = 46,173,094,947.53
  5. Step 5: Solve for x
    x = 46,173,094,947.53/339,886.08
  6. Step 6: Final answer
    x = 135,848.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.