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Finding the Fourth Proportional to 236,077.80, 325,787.46 and 128,647.50

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Solution

The fourth proportional to 236,077.80, 325,787.46 and 128,647.50 is: 177,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,077.80 : 325,787.46 = 128,647.50 : x
  2. Step 2: Convert to fraction form
    236,077.80/325,787.46 = 128,647.50/x
  3. Step 3: Cross multiply
    236,077.80x = 325,787.46 × 128,647.50
  4. Step 4: Simplify right side
    236,077.80x = 41,911,742,260.35
  5. Step 5: Solve for x
    x = 41,911,742,260.35/236,077.80
  6. Step 6: Final answer
    x = 177,533.60

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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.