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Finding the Fourth Proportional to 93,548.52, 128,834.55 and 87,545.21

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Solution

The fourth proportional to 93,548.52, 128,834.55 and 87,545.21 is: 120,566.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,548.52 : 128,834.55 = 87,545.21 : x
  2. Step 2: Convert to fraction form
    93,548.52/128,834.55 = 87,545.21/x
  3. Step 3: Cross multiply
    93,548.52x = 128,834.55 × 87,545.21
  4. Step 4: Simplify right side
    93,548.52x = 11,278,847,090.83
  5. Step 5: Solve for x
    x = 11,278,847,090.83/93,548.52
  6. Step 6: Final answer
    x = 120,566.81

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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.