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Finding the Fourth Proportional to 123,602.90, 170,572.38 and 67,014.32

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Solution

The fourth proportional to 123,602.90, 170,572.38 and 67,014.32 is: 92,479.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,602.90 : 170,572.38 = 67,014.32 : x
  2. Step 2: Convert to fraction form
    123,602.90/170,572.38 = 67,014.32/x
  3. Step 3: Cross multiply
    123,602.90x = 170,572.38 × 67,014.32
  4. Step 4: Simplify right side
    123,602.90x = 11,430,792,056.48
  5. Step 5: Solve for x
    x = 11,430,792,056.48/123,602.90
  6. Step 6: Final answer
    x = 92,479.97

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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.