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Finding the Fourth Proportional to 92,903.58, 128,206.98 and 50,463

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Solution

The fourth proportional to 92,903.58, 128,206.98 and 50,463 is: 69,638.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,903.58 : 128,206.98 = 50,463 : x
  2. Step 2: Convert to fraction form
    92,903.58/128,206.98 = 50,463/x
  3. Step 3: Cross multiply
    92,903.58x = 128,206.98 × 50,463
  4. Step 4: Simplify right side
    92,903.58x = 6,469,708,831.74
  5. Step 5: Solve for x
    x = 6,469,708,831.74/92,903.58
  6. Step 6: Final answer
    x = 69,638.96

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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.