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Finding the Fourth Proportional to 92,931.99, 128,246.76 and 50,490.51

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Solution

The fourth proportional to 92,931.99, 128,246.76 and 50,490.51 is: 69,677.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,931.99 : 128,246.76 = 50,490.51 : x
  2. Step 2: Convert to fraction form
    92,931.99/128,246.76 = 50,490.51/x
  3. Step 3: Cross multiply
    92,931.99x = 128,246.76 × 50,490.51
  4. Step 4: Simplify right side
    92,931.99x = 6,475,244,318.25
  5. Step 5: Solve for x
    x = 6,475,244,318.25/92,931.99
  6. Step 6: Final answer
    x = 69,677.24

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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.