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Finding the Fourth Proportional to 92,963.16, 128,295.90 and 54,724.68

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Solution

The fourth proportional to 92,963.16, 128,295.90 and 54,724.68 is: 75,524.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,963.16 : 128,295.90 = 54,724.68 : x
  2. Step 2: Convert to fraction form
    92,963.16/128,295.90 = 54,724.68/x
  3. Step 3: Cross multiply
    92,963.16x = 128,295.90 × 54,724.68
  4. Step 4: Simplify right side
    92,963.16x = 7,020,952,072.81
  5. Step 5: Solve for x
    x = 7,020,952,072.81/92,963.16
  6. Step 6: Final answer
    x = 75,524.03

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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.