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Finding the Fourth Proportional to 92,972.61, 128,299.68 and 52,685.37

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Solution

The fourth proportional to 92,972.61, 128,299.68 and 52,685.37 is: 72,704.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,972.61 : 128,299.68 = 52,685.37 : x
  2. Step 2: Convert to fraction form
    92,972.61/128,299.68 = 52,685.37/x
  3. Step 3: Cross multiply
    92,972.61x = 128,299.68 × 52,685.37
  4. Step 4: Simplify right side
    92,972.61x = 6,759,516,111.68
  5. Step 5: Solve for x
    x = 6,759,516,111.68/92,972.61
  6. Step 6: Final answer
    x = 72,704.38

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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.