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Finding the Fourth Proportional to 64,455.36, 88,949.28 and 38,958.24

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Solution

The fourth proportional to 64,455.36, 88,949.28 and 38,958.24 is: 53,762.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,455.36 : 88,949.28 = 38,958.24 : x
  2. Step 2: Convert to fraction form
    64,455.36/88,949.28 = 38,958.24/x
  3. Step 3: Cross multiply
    64,455.36x = 88,949.28 × 38,958.24
  4. Step 4: Simplify right side
    64,455.36x = 3,465,307,398.07
  5. Step 5: Solve for x
    x = 3,465,307,398.07/64,455.36
  6. Step 6: Final answer
    x = 53,762.91

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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.