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Finding the Fourth Proportional to 101,798.53, 140,482.81 and 56,479.48

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Solution

The fourth proportional to 101,798.53, 140,482.81 and 56,479.48 is: 77,942.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,798.53 : 140,482.81 = 56,479.48 : x
  2. Step 2: Convert to fraction form
    101,798.53/140,482.81 = 56,479.48/x
  3. Step 3: Cross multiply
    101,798.53x = 140,482.81 × 56,479.48
  4. Step 4: Simplify right side
    101,798.53x = 7,934,396,057.74
  5. Step 5: Solve for x
    x = 7,934,396,057.74/101,798.53
  6. Step 6: Final answer
    x = 77,942.15

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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.