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Finding the Fourth Proportional to 170,939.60, 256,409.40 and 46,280.40

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Solution

The fourth proportional to 170,939.60, 256,409.40 and 46,280.40 is: 69,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,939.60 : 256,409.40 = 46,280.40 : x
  2. Step 2: Convert to fraction form
    170,939.60/256,409.40 = 46,280.40/x
  3. Step 3: Cross multiply
    170,939.60x = 256,409.40 × 46,280.40
  4. Step 4: Simplify right side
    170,939.60x = 11,866,729,595.76
  5. Step 5: Solve for x
    x = 11,866,729,595.76/170,939.60
  6. Step 6: Final answer
    x = 69,420.60

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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.