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Finding the Fourth Proportional to 70,957.88, 97,926.32 and 39,126.76

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Solution

The fourth proportional to 70,957.88, 97,926.32 and 39,126.76 is: 53,997.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,957.88 : 97,926.32 = 39,126.76 : x
  2. Step 2: Convert to fraction form
    70,957.88/97,926.32 = 39,126.76/x
  3. Step 3: Cross multiply
    70,957.88x = 97,926.32 × 39,126.76
  4. Step 4: Simplify right side
    70,957.88x = 3,831,539,620.32
  5. Step 5: Solve for x
    x = 3,831,539,620.32/70,957.88
  6. Step 6: Final answer
    x = 53,997.38

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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.