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Finding the Fourth Proportional to 71,663.16, 98,893.26 and 39,833.40

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Solution

The fourth proportional to 71,663.16, 98,893.26 and 39,833.40 is: 54,969.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,663.16 : 98,893.26 = 39,833.40 : x
  2. Step 2: Convert to fraction form
    71,663.16/98,893.26 = 39,833.40/x
  3. Step 3: Cross multiply
    71,663.16x = 98,893.26 × 39,833.40
  4. Step 4: Simplify right side
    71,663.16x = 3,939,254,782.88
  5. Step 5: Solve for x
    x = 3,939,254,782.88/71,663.16
  6. Step 6: Final answer
    x = 54,969.04

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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.