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Finding the Fourth Proportional to 93,098.57, 128,485.49 and 54,869.94

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Solution

The fourth proportional to 93,098.57, 128,485.49 and 54,869.94 is: 75,726.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,098.57 : 128,485.49 = 54,869.94 : x
  2. Step 2: Convert to fraction form
    93,098.57/128,485.49 = 54,869.94/x
  3. Step 3: Cross multiply
    93,098.57x = 128,485.49 × 54,869.94
  4. Step 4: Simplify right side
    93,098.57x = 7,049,990,852.82
  5. Step 5: Solve for x
    x = 7,049,990,852.82/93,098.57
  6. Step 6: Final answer
    x = 75,726.10

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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.