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Finding the Fourth Proportional to 76,601.98, 105,703.14 and 47,916.10

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Solution

The fourth proportional to 76,601.98, 105,703.14 and 47,916.10 is: 66,119.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,601.98 : 105,703.14 = 47,916.10 : x
  2. Step 2: Convert to fraction form
    76,601.98/105,703.14 = 47,916.10/x
  3. Step 3: Cross multiply
    76,601.98x = 105,703.14 × 47,916.10
  4. Step 4: Simplify right side
    76,601.98x = 5,064,882,226.55
  5. Step 5: Solve for x
    x = 5,064,882,226.55/76,601.98
  6. Step 6: Final answer
    x = 66,119.47

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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.