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Finding the Fourth Proportional to 169,603.60, 254,434.20 and 90,696.40

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Solution

The fourth proportional to 169,603.60, 254,434.20 and 90,696.40 is: 136,060.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,603.60 : 254,434.20 = 90,696.40 : x
  2. Step 2: Convert to fraction form
    169,603.60/254,434.20 = 90,696.40/x
  3. Step 3: Cross multiply
    169,603.60x = 254,434.20 × 90,696.40
  4. Step 4: Simplify right side
    169,603.60x = 23,076,265,976.88
  5. Step 5: Solve for x
    x = 23,076,265,976.88/169,603.60
  6. Step 6: Final answer
    x = 136,060.00

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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.