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Finding the Fourth Proportional to 251,684.54, 347,331.95 and 136,970.58

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Solution

The fourth proportional to 251,684.54, 347,331.95 and 136,970.58 is: 189,023.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,684.54 : 347,331.95 = 136,970.58 : x
  2. Step 2: Convert to fraction form
    251,684.54/347,331.95 = 136,970.58/x
  3. Step 3: Cross multiply
    251,684.54x = 347,331.95 × 136,970.58
  4. Step 4: Simplify right side
    251,684.54x = 47,574,258,644.03
  5. Step 5: Solve for x
    x = 47,574,258,644.03/251,684.54
  6. Step 6: Final answer
    x = 189,023.36

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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.