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Finding the Fourth Proportional to 76,060.62, 104,965.47 and 42,071.40

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Solution

The fourth proportional to 76,060.62, 104,965.47 and 42,071.40 is: 58,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,060.62 : 104,965.47 = 42,071.40 : x
  2. Step 2: Convert to fraction form
    76,060.62/104,965.47 = 42,071.40/x
  3. Step 3: Cross multiply
    76,060.62x = 104,965.47 × 42,071.40
  4. Step 4: Simplify right side
    76,060.62x = 4,416,044,274.56
  5. Step 5: Solve for x
    x = 4,416,044,274.56/76,060.62
  6. Step 6: Final answer
    x = 58,059.54

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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.