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Finding the Fourth Proportional to 71,054.82, 98,055.71 and 39,223.69

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Solution

The fourth proportional to 71,054.82, 98,055.71 and 39,223.69 is: 54,128.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,054.82 : 98,055.71 = 39,223.69 : x
  2. Step 2: Convert to fraction form
    71,054.82/98,055.71 = 39,223.69/x
  3. Step 3: Cross multiply
    71,054.82x = 98,055.71 × 39,223.69
  4. Step 4: Simplify right side
    71,054.82x = 3,846,106,771.77
  5. Step 5: Solve for x
    x = 3,846,106,771.77/71,054.82
  6. Step 6: Final answer
    x = 54,128.72

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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.