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Finding the Fourth Proportional to 71,394.22, 98,521.54 and 39,566.08

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Solution

The fourth proportional to 71,394.22, 98,521.54 and 39,566.08 is: 54,599.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,394.22 : 98,521.54 = 39,566.08 : x
  2. Step 2: Convert to fraction form
    71,394.22/98,521.54 = 39,566.08/x
  3. Step 3: Cross multiply
    71,394.22x = 98,521.54 × 39,566.08
  4. Step 4: Simplify right side
    71,394.22x = 3,898,111,133.36
  5. Step 5: Solve for x
    x = 3,898,111,133.36/71,394.22
  6. Step 6: Final answer
    x = 54,599.81

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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.