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Finding the Fourth Proportional to 492,346.80, 739,905.12 and 292,702.68

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Solution

The fourth proportional to 492,346.80, 739,905.12 and 292,702.68 is: 439,877.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,346.80 : 739,905.12 = 292,702.68 : x
  2. Step 2: Convert to fraction form
    492,346.80/739,905.12 = 292,702.68/x
  3. Step 3: Cross multiply
    492,346.80x = 739,905.12 × 292,702.68
  4. Step 4: Simplify right side
    492,346.80x = 216,572,211,569.72
  5. Step 5: Solve for x
    x = 216,572,211,569.72/492,346.80
  6. Step 6: Final answer
    x = 439,877.36

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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.