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Finding the Fourth Proportional to 207,978.04, 287,009.76 and 117,353.22

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Solution

The fourth proportional to 207,978.04, 287,009.76 and 117,353.22 is: 161,947.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,978.04 : 287,009.76 = 117,353.22 : x
  2. Step 2: Convert to fraction form
    207,978.04/287,009.76 = 117,353.22/x
  3. Step 3: Cross multiply
    207,978.04x = 287,009.76 × 117,353.22
  4. Step 4: Simplify right side
    207,978.04x = 33,681,519,507.43
  5. Step 5: Solve for x
    x = 33,681,519,507.43/207,978.04
  6. Step 6: Final answer
    x = 161,947.48

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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.