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Finding the Fourth Proportional to 126,973, 175,222.74 and 70,393

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Solution

The fourth proportional to 126,973, 175,222.74 and 70,393 is: 97,142.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,973 : 175,222.74 = 70,393 : x
  2. Step 2: Convert to fraction form
    126,973/175,222.74 = 70,393/x
  3. Step 3: Cross multiply
    126,973x = 175,222.74 × 70,393
  4. Step 4: Simplify right side
    126,973x = 12,334,454,336.82
  5. Step 5: Solve for x
    x = 12,334,454,336.82/126,973
  6. Step 6: Final answer
    x = 97,142.34

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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.