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Finding the Fourth Proportional to 173,521.60, 260,039.40 and 138,043.60

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Solution

The fourth proportional to 173,521.60, 260,039.40 and 138,043.60 is: 206,872.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,521.60 : 260,039.40 = 138,043.60 : x
  2. Step 2: Convert to fraction form
    173,521.60/260,039.40 = 138,043.60/x
  3. Step 3: Cross multiply
    173,521.60x = 260,039.40 × 138,043.60
  4. Step 4: Simplify right side
    173,521.60x = 35,896,774,917.84
  5. Step 5: Solve for x
    x = 35,896,774,917.84/173,521.60
  6. Step 6: Final answer
    x = 206,872.08

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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.