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Finding the Fourth Proportional to 94,186.80, 129,978.76 and 51,166.72

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Solution

The fourth proportional to 94,186.80, 129,978.76 and 51,166.72 is: 70,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,186.80 : 129,978.76 = 51,166.72 : x
  2. Step 2: Convert to fraction form
    94,186.80/129,978.76 = 51,166.72/x
  3. Step 3: Cross multiply
    94,186.80x = 129,978.76 × 51,166.72
  4. Step 4: Simplify right side
    94,186.80x = 6,650,586,818.87
  5. Step 5: Solve for x
    x = 6,650,586,818.87/94,186.80
  6. Step 6: Final answer
    x = 70,610.60

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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.