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Finding the Fourth Proportional to 70,393.45, 97,143.30 and 38,562.35

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Solution

The fourth proportional to 70,393.45, 97,143.30 and 38,562.35 is: 53,216.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,393.45 : 97,143.30 = 38,562.35 : x
  2. Step 2: Convert to fraction form
    70,393.45/97,143.30 = 38,562.35/x
  3. Step 3: Cross multiply
    70,393.45x = 97,143.30 × 38,562.35
  4. Step 4: Simplify right side
    70,393.45x = 3,746,073,934.76
  5. Step 5: Solve for x
    x = 3,746,073,934.76/70,393.45
  6. Step 6: Final answer
    x = 53,216.23

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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.