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Finding the Fourth Proportional to 170,745.60, 256,195.20 and 77,203.20

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Solution

The fourth proportional to 170,745.60, 256,195.20 and 77,203.20 is: 115,839.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,745.60 : 256,195.20 = 77,203.20 : x
  2. Step 2: Convert to fraction form
    170,745.60/256,195.20 = 77,203.20/x
  3. Step 3: Cross multiply
    170,745.60x = 256,195.20 × 77,203.20
  4. Step 4: Simplify right side
    170,745.60x = 19,779,089,264.64
  5. Step 5: Solve for x
    x = 19,779,089,264.64/170,745.60
  6. Step 6: Final answer
    x = 115,839.53

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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.