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Finding the Fourth Proportional to 97,480.80, 146,120.40 and 53,013.60

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Solution

The fourth proportional to 97,480.80, 146,120.40 and 53,013.60 is: 79,465.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,480.80 : 146,120.40 = 53,013.60 : x
  2. Step 2: Convert to fraction form
    97,480.80/146,120.40 = 53,013.60/x
  3. Step 3: Cross multiply
    97,480.80x = 146,120.40 × 53,013.60
  4. Step 4: Simplify right side
    97,480.80x = 7,746,368,437.44
  5. Step 5: Solve for x
    x = 7,746,368,437.44/97,480.80
  6. Step 6: Final answer
    x = 79,465.58

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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.