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Finding the Fourth Proportional to 122,794.52, 169,479.64 and 76,875.51

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Solution

The fourth proportional to 122,794.52, 169,479.64 and 76,875.51 is: 106,102.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,794.52 : 169,479.64 = 76,875.51 : x
  2. Step 2: Convert to fraction form
    122,794.52/169,479.64 = 76,875.51/x
  3. Step 3: Cross multiply
    122,794.52x = 169,479.64 × 76,875.51
  4. Step 4: Simplify right side
    122,794.52x = 13,028,834,491.26
  5. Step 5: Solve for x
    x = 13,028,834,491.26/122,794.52
  6. Step 6: Final answer
    x = 106,102.74

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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.