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Finding the Fourth Proportional to 261,277.57, 360,639.71 and 170,647.28

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Solution

The fourth proportional to 261,277.57, 360,639.71 and 170,647.28 is: 235,543.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,277.57 : 360,639.71 = 170,647.28 : x
  2. Step 2: Convert to fraction form
    261,277.57/360,639.71 = 170,647.28/x
  3. Step 3: Cross multiply
    261,277.57x = 360,639.71 × 170,647.28
  4. Step 4: Simplify right side
    261,277.57x = 61,542,185,571.49
  5. Step 5: Solve for x
    x = 61,542,185,571.49/261,277.57
  6. Step 6: Final answer
    x = 235,543.32

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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.