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Finding the Fourth Proportional to 76,761, 105,930.86 and 44,930.58

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Solution

The fourth proportional to 76,761, 105,930.86 and 44,930.58 is: 62,004.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,761 : 105,930.86 = 44,930.58 : x
  2. Step 2: Convert to fraction form
    76,761/105,930.86 = 44,930.58/x
  3. Step 3: Cross multiply
    76,761x = 105,930.86 × 44,930.58
  4. Step 4: Simplify right side
    76,761x = 4,759,535,332.77
  5. Step 5: Solve for x
    x = 4,759,535,332.77/76,761
  6. Step 6: Final answer
    x = 62,004.60

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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.