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Finding the Fourth Proportional to 93,649.25, 129,219.14 and 55,389.74

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Solution

The fourth proportional to 93,649.25, 129,219.14 and 55,389.74 is: 76,427.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,649.25 : 129,219.14 = 55,389.74 : x
  2. Step 2: Convert to fraction form
    93,649.25/129,219.14 = 55,389.74/x
  3. Step 3: Cross multiply
    93,649.25x = 129,219.14 × 55,389.74
  4. Step 4: Simplify right side
    93,649.25x = 7,157,414,567.62
  5. Step 5: Solve for x
    x = 7,157,414,567.62/93,649.25
  6. Step 6: Final answer
    x = 76,427.89

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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.