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Finding the Fourth Proportional to 98,816.72, 136,366.91 and 53,494.69

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Solution

The fourth proportional to 98,816.72, 136,366.91 and 53,494.69 is: 73,822.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,816.72 : 136,366.91 = 53,494.69 : x
  2. Step 2: Convert to fraction form
    98,816.72/136,366.91 = 53,494.69/x
  3. Step 3: Cross multiply
    98,816.72x = 136,366.91 × 53,494.69
  4. Step 4: Simplify right side
    98,816.72x = 7,294,904,894.87
  5. Step 5: Solve for x
    x = 7,294,904,894.87/98,816.72
  6. Step 6: Final answer
    x = 73,822.58

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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.