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Finding the Fourth Proportional to 92,803.61, 128,069.34 and 50,362.13

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Solution

The fourth proportional to 92,803.61, 128,069.34 and 50,362.13 is: 69,499.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,803.61 : 128,069.34 = 50,362.13 : x
  2. Step 2: Convert to fraction form
    92,803.61/128,069.34 = 50,362.13/x
  3. Step 3: Cross multiply
    92,803.61x = 128,069.34 × 50,362.13
  4. Step 4: Simplify right side
    92,803.61x = 6,449,844,750.09
  5. Step 5: Solve for x
    x = 6,449,844,750.09/92,803.61
  6. Step 6: Final answer
    x = 69,499.93

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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.