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Finding the Fourth Proportional to 93,480.26, 128,987.54 and 55,234.48

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Solution

The fourth proportional to 93,480.26, 128,987.54 and 55,234.48 is: 76,214.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,480.26 : 128,987.54 = 55,234.48 : x
  2. Step 2: Convert to fraction form
    93,480.26/128,987.54 = 55,234.48/x
  3. Step 3: Cross multiply
    93,480.26x = 128,987.54 × 55,234.48
  4. Step 4: Simplify right side
    93,480.26x = 7,124,559,698.38
  5. Step 5: Solve for x
    x = 7,124,559,698.38/93,480.26
  6. Step 6: Final answer
    x = 76,214.59

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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.