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Finding the Fourth Proportional to 93,003.71, 128,348.45 and 57,186.81

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Solution

The fourth proportional to 93,003.71, 128,348.45 and 57,186.81 is: 78,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,003.71 : 128,348.45 = 57,186.81 : x
  2. Step 2: Convert to fraction form
    93,003.71/128,348.45 = 57,186.81/x
  3. Step 3: Cross multiply
    93,003.71x = 128,348.45 × 57,186.81
  4. Step 4: Simplify right side
    93,003.71x = 7,339,838,423.94
  5. Step 5: Solve for x
    x = 7,339,838,423.94/93,003.71
  6. Step 6: Final answer
    x = 78,919.85

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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.