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Finding the Fourth Proportional to 92,420.25, 127,539.99 and 49,978.77

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Solution

The fourth proportional to 92,420.25, 127,539.99 and 49,978.77 is: 68,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,420.25 : 127,539.99 = 49,978.77 : x
  2. Step 2: Convert to fraction form
    92,420.25/127,539.99 = 49,978.77/x
  3. Step 3: Cross multiply
    92,420.25x = 127,539.99 × 49,978.77
  4. Step 4: Simplify right side
    92,420.25x = 6,374,291,826.01
  5. Step 5: Solve for x
    x = 6,374,291,826.01/92,420.25
  6. Step 6: Final answer
    x = 68,970.73

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1.5x scale

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.