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Finding the Fourth Proportional to 86,794.74, 119,726.91 and 50,978.16

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Solution

The fourth proportional to 86,794.74, 119,726.91 and 50,978.16 is: 70,320.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,794.74 : 119,726.91 = 50,978.16 : x
  2. Step 2: Convert to fraction form
    86,794.74/119,726.91 = 50,978.16/x
  3. Step 3: Cross multiply
    86,794.74x = 119,726.91 × 50,978.16
  4. Step 4: Simplify right side
    86,794.74x = 6,103,457,574.29
  5. Step 5: Solve for x
    x = 6,103,457,574.29/86,794.74
  6. Step 6: Final answer
    x = 70,320.59

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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.