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Finding the Fourth Proportional to 96,900.64, 133,706.66 and 53,878.93

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Solution

The fourth proportional to 96,900.64, 133,706.66 and 53,878.93 is: 74,343.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,900.64 : 133,706.66 = 53,878.93 : x
  2. Step 2: Convert to fraction form
    96,900.64/133,706.66 = 53,878.93/x
  3. Step 3: Cross multiply
    96,900.64x = 133,706.66 × 53,878.93
  4. Step 4: Simplify right side
    96,900.64x = 7,203,971,774.67
  5. Step 5: Solve for x
    x = 7,203,971,774.67/96,900.64
  6. Step 6: Final answer
    x = 74,343.90

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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.