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Finding the Fourth Proportional to 70,586.17, 97,396.21 and 39,959.06

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Solution

The fourth proportional to 70,586.17, 97,396.21 and 39,959.06 is: 55,136.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,586.17 : 97,396.21 = 39,959.06 : x
  2. Step 2: Convert to fraction form
    70,586.17/97,396.21 = 39,959.06/x
  3. Step 3: Cross multiply
    70,586.17x = 97,396.21 × 39,959.06
  4. Step 4: Simplify right side
    70,586.17x = 3,891,860,999.16
  5. Step 5: Solve for x
    x = 3,891,860,999.16/70,586.17
  6. Step 6: Final answer
    x = 55,136.31

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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.