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Finding the Fourth Proportional to 70,925.66, 97,866.87 and 40,712.12

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Solution

The fourth proportional to 70,925.66, 97,866.87 and 40,712.12 is: 56,176.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,925.66 : 97,866.87 = 40,712.12 : x
  2. Step 2: Convert to fraction form
    70,925.66/97,866.87 = 40,712.12/x
  3. Step 3: Cross multiply
    70,925.66x = 97,866.87 × 40,712.12
  4. Step 4: Simplify right side
    70,925.66x = 3,984,367,755.46
  5. Step 5: Solve for x
    x = 3,984,367,755.46/70,925.66
  6. Step 6: Final answer
    x = 56,176.68

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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.