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Finding the Fourth Proportional to 93,649.76, 129,219.83 and 55,390.23

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Solution

The fourth proportional to 93,649.76, 129,219.83 and 55,390.23 is: 76,428.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,649.76 : 129,219.83 = 55,390.23 : x
  2. Step 2: Convert to fraction form
    93,649.76/129,219.83 = 55,390.23/x
  3. Step 3: Cross multiply
    93,649.76x = 129,219.83 × 55,390.23
  4. Step 4: Simplify right side
    93,649.76x = 7,157,515,827.31
  5. Step 5: Solve for x
    x = 7,157,515,827.31/93,649.76
  6. Step 6: Final answer
    x = 76,428.56

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Double scale
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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.