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Finding the Fourth Proportional to 93,684.75, 129,347.40 and 55,456.53

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Solution

The fourth proportional to 93,684.75, 129,347.40 and 55,456.53 is: 76,566.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,684.75 : 129,347.40 = 55,456.53 : x
  2. Step 2: Convert to fraction form
    93,684.75/129,347.40 = 55,456.53/x
  3. Step 3: Cross multiply
    93,684.75x = 129,347.40 × 55,456.53
  4. Step 4: Simplify right side
    93,684.75x = 7,173,157,968.52
  5. Step 5: Solve for x
    x = 7,173,157,968.52/93,684.75
  6. Step 6: Final answer
    x = 76,566.98

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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.