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Finding the Fourth Proportional to 153,686.91, 212,039.60 and 92,405.55

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Solution

The fourth proportional to 153,686.91, 212,039.60 and 92,405.55 is: 127,490.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,686.91 : 212,039.60 = 92,405.55 : x
  2. Step 2: Convert to fraction form
    153,686.91/212,039.60 = 92,405.55/x
  3. Step 3: Cross multiply
    153,686.91x = 212,039.60 × 92,405.55
  4. Step 4: Simplify right side
    153,686.91x = 19,593,635,397.75
  5. Step 5: Solve for x
    x = 19,593,635,397.75/153,686.91
  6. Step 6: Final answer
    x = 127,490.59

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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.