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Finding the Fourth Proportional to 70,561.66, 105,786.96 and 48,307.60

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Solution

The fourth proportional to 70,561.66, 105,786.96 and 48,307.60 is: 72,423.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,561.66 : 105,786.96 = 48,307.60 : x
  2. Step 2: Convert to fraction form
    70,561.66/105,786.96 = 48,307.60/x
  3. Step 3: Cross multiply
    70,561.66x = 105,786.96 × 48,307.60
  4. Step 4: Simplify right side
    70,561.66x = 5,110,314,148.90
  5. Step 5: Solve for x
    x = 5,110,314,148.90/70,561.66
  6. Step 6: Final answer
    x = 72,423.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.