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Finding the Fourth Proportional to 92,913.84, 128,274.30 and 61,175

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Solution

The fourth proportional to 92,913.84, 128,274.30 and 61,175 is: 84,456.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,913.84 : 128,274.30 = 61,175 : x
  2. Step 2: Convert to fraction form
    92,913.84/128,274.30 = 61,175/x
  3. Step 3: Cross multiply
    92,913.84x = 128,274.30 × 61,175
  4. Step 4: Simplify right side
    92,913.84x = 7,847,180,302.50
  5. Step 5: Solve for x
    x = 7,847,180,302.50/92,913.84
  6. Step 6: Final answer
    x = 84,456.53

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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.