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Finding the Fourth Proportional to 92,681.76, 139,057.44 and 42,785.76

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Solution

The fourth proportional to 92,681.76, 139,057.44 and 42,785.76 is: 64,194.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,681.76 : 139,057.44 = 42,785.76 : x
  2. Step 2: Convert to fraction form
    92,681.76/139,057.44 = 42,785.76/x
  3. Step 3: Cross multiply
    92,681.76x = 139,057.44 × 42,785.76
  4. Step 4: Simplify right side
    92,681.76x = 5,949,678,254.05
  5. Step 5: Solve for x
    x = 5,949,678,254.05/92,681.76
  6. Step 6: Final answer
    x = 64,194.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.