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Finding the Fourth Proportional to 66,690.87, 99,925.25 and 46,927.91

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Solution

The fourth proportional to 66,690.87, 99,925.25 and 46,927.91 is: 70,313.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,690.87 : 99,925.25 = 46,927.91 : x
  2. Step 2: Convert to fraction form
    66,690.87/99,925.25 = 46,927.91/x
  3. Step 3: Cross multiply
    66,690.87x = 99,925.25 × 46,927.91
  4. Step 4: Simplify right side
    66,690.87x = 4,689,282,404.46
  5. Step 5: Solve for x
    x = 4,689,282,404.46/66,690.87
  6. Step 6: Final answer
    x = 70,313.71

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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.