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Finding the Fourth Proportional to 477,907.20, 716,893.20 and 162,387.90

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Solution

The fourth proportional to 477,907.20, 716,893.20 and 162,387.90 is: 243,592.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,907.20 : 716,893.20 = 162,387.90 : x
  2. Step 2: Convert to fraction form
    477,907.20/716,893.20 = 162,387.90/x
  3. Step 3: Cross multiply
    477,907.20x = 716,893.20 × 162,387.90
  4. Step 4: Simplify right side
    477,907.20x = 116,414,781,272.28
  5. Step 5: Solve for x
    x = 116,414,781,272.28/477,907.20
  6. Step 6: Final answer
    x = 243,592.86

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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.