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Finding the Fourth Proportional to 42,407.60, 63,611.40 and 23,975.60

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Solution

The fourth proportional to 42,407.60, 63,611.40 and 23,975.60 is: 35,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,407.60 : 63,611.40 = 23,975.60 : x
  2. Step 2: Convert to fraction form
    42,407.60/63,611.40 = 23,975.60/x
  3. Step 3: Cross multiply
    42,407.60x = 63,611.40 × 23,975.60
  4. Step 4: Simplify right side
    42,407.60x = 1,525,121,481.84
  5. Step 5: Solve for x
    x = 1,525,121,481.84/42,407.60
  6. Step 6: Final answer
    x = 35,963.40

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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.