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Finding the Fourth Proportional to 92,940.72, 128,259.36 and 50,499.96

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Solution

The fourth proportional to 92,940.72, 128,259.36 and 50,499.96 is: 69,690.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,940.72 : 128,259.36 = 50,499.96 : x
  2. Step 2: Convert to fraction form
    92,940.72/128,259.36 = 50,499.96/x
  3. Step 3: Cross multiply
    92,940.72x = 128,259.36 × 50,499.96
  4. Step 4: Simplify right side
    92,940.72x = 6,477,092,549.63
  5. Step 5: Solve for x
    x = 6,477,092,549.63/92,940.72
  6. Step 6: Final answer
    x = 69,690.58

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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.