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Finding the Fourth Proportional to 70,322.91, 97,045.65 and 38,491.98

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Solution

The fourth proportional to 70,322.91, 97,045.65 and 38,491.98 is: 53,118.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,322.91 : 97,045.65 = 38,491.98 : x
  2. Step 2: Convert to fraction form
    70,322.91/97,045.65 = 38,491.98/x
  3. Step 3: Cross multiply
    70,322.91x = 97,045.65 × 38,491.98
  4. Step 4: Simplify right side
    70,322.91x = 3,735,479,218.89
  5. Step 5: Solve for x
    x = 3,735,479,218.89/70,322.91
  6. Step 6: Final answer
    x = 53,118.95

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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.