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Finding the Fourth Proportional to 76,382.95, 105,421.15 and 44,551.85

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Solution

The fourth proportional to 76,382.95, 105,421.15 and 44,551.85 is: 61,488.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,382.95 : 105,421.15 = 44,551.85 : x
  2. Step 2: Convert to fraction form
    76,382.95/105,421.15 = 44,551.85/x
  3. Step 3: Cross multiply
    76,382.95x = 105,421.15 × 44,551.85
  4. Step 4: Simplify right side
    76,382.95x = 4,696,707,261.63
  5. Step 5: Solve for x
    x = 4,696,707,261.63/76,382.95
  6. Step 6: Final answer
    x = 61,488.95

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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.