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Finding the Fourth Proportional to 93,401.80, 128,855.49 and 61,144.30

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Solution

The fourth proportional to 93,401.80, 128,855.49 and 61,144.30 is: 84,353.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,401.80 : 128,855.49 = 61,144.30 : x
  2. Step 2: Convert to fraction form
    93,401.80/128,855.49 = 61,144.30/x
  3. Step 3: Cross multiply
    93,401.80x = 128,855.49 × 61,144.30
  4. Step 4: Simplify right side
    93,401.80x = 7,878,778,737.21
  5. Step 5: Solve for x
    x = 7,878,778,737.21/93,401.80
  6. Step 6: Final answer
    x = 84,353.61

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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.