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Finding the Fourth Proportional to 92,902.35, 128,225.70 and 61,074.21

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Solution

The fourth proportional to 92,902.35, 128,225.70 and 61,074.21 is: 84,295.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,902.35 : 128,225.70 = 61,074.21 : x
  2. Step 2: Convert to fraction form
    92,902.35/128,225.70 = 61,074.21/x
  3. Step 3: Cross multiply
    92,902.35x = 128,225.70 × 61,074.21
  4. Step 4: Simplify right side
    92,902.35x = 7,831,283,329.20
  5. Step 5: Solve for x
    x = 7,831,283,329.20/92,902.35
  6. Step 6: Final answer
    x = 84,295.86

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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.