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Finding the Fourth Proportional to 155,643.54, 214,591.59 and 101,843.34

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Solution

The fourth proportional to 155,643.54, 214,591.59 and 101,843.34 is: 140,415.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,643.54 : 214,591.59 = 101,843.34 : x
  2. Step 2: Convert to fraction form
    155,643.54/214,591.59 = 101,843.34/x
  3. Step 3: Cross multiply
    155,643.54x = 214,591.59 × 101,843.34
  4. Step 4: Simplify right side
    155,643.54x = 21,854,724,261.51
  5. Step 5: Solve for x
    x = 21,854,724,261.51/155,643.54
  6. Step 6: Final answer
    x = 140,415.24

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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.