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Finding the Fourth Proportional to 93,403.55, 128,746.33 and 63,177.85

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Solution

The fourth proportional to 93,403.55, 128,746.33 and 63,177.85 is: 87,083.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,403.55 : 128,746.33 = 63,177.85 : x
  2. Step 2: Convert to fraction form
    93,403.55/128,746.33 = 63,177.85/x
  3. Step 3: Cross multiply
    93,403.55x = 128,746.33 × 63,177.85
  4. Step 4: Simplify right side
    93,403.55x = 8,133,916,327.78
  5. Step 5: Solve for x
    x = 8,133,916,327.78/93,403.55
  6. Step 6: Final answer
    x = 87,083.59

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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.