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Finding the Fourth Proportional to 70,915.08, 97,866.66 and 40,700.16

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Solution

The fourth proportional to 70,915.08, 97,866.66 and 40,700.16 is: 56,168.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,915.08 : 97,866.66 = 40,700.16 : x
  2. Step 2: Convert to fraction form
    70,915.08/97,866.66 = 40,700.16/x
  3. Step 3: Cross multiply
    70,915.08x = 97,866.66 × 40,700.16
  4. Step 4: Simplify right side
    70,915.08x = 3,983,188,720.67
  5. Step 5: Solve for x
    x = 3,983,188,720.67/70,915.08
  6. Step 6: Final answer
    x = 56,168.43

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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.