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Finding the Fourth Proportional to 116,655.08, 160,941.90 and 76,391.80

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Solution

The fourth proportional to 116,655.08, 160,941.90 and 76,391.80 is: 105,393.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,655.08 : 160,941.90 = 76,391.80 : x
  2. Step 2: Convert to fraction form
    116,655.08/160,941.90 = 76,391.80/x
  3. Step 3: Cross multiply
    116,655.08x = 160,941.90 × 76,391.80
  4. Step 4: Simplify right side
    116,655.08x = 12,294,641,436.42
  5. Step 5: Solve for x
    x = 12,294,641,436.42/116,655.08
  6. Step 6: Final answer
    x = 105,393.11

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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.