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Finding the Fourth Proportional to 66,694.51, 99,930.69 and 46,931.53

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Solution

The fourth proportional to 66,694.51, 99,930.69 and 46,931.53 is: 70,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,694.51 : 99,930.69 = 46,931.53 : x
  2. Step 2: Convert to fraction form
    66,694.51/99,930.69 = 46,931.53/x
  3. Step 3: Cross multiply
    66,694.51x = 99,930.69 × 46,931.53
  4. Step 4: Simplify right side
    66,694.51x = 4,689,900,175.66
  5. Step 5: Solve for x
    x = 4,689,900,175.66/66,694.51
  6. Step 6: Final answer
    x = 70,319.13

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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.