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Finding the Fourth Proportional to 150,953.76, 208,263.08 and 90,543.96

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Solution

The fourth proportional to 150,953.76, 208,263.08 and 90,543.96 is: 124,918.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,953.76 : 208,263.08 = 90,543.96 : x
  2. Step 2: Convert to fraction form
    150,953.76/208,263.08 = 90,543.96/x
  3. Step 3: Cross multiply
    150,953.76x = 208,263.08 × 90,543.96
  4. Step 4: Simplify right side
    150,953.76x = 18,856,963,985.00
  5. Step 5: Solve for x
    x = 18,856,963,985.00/150,953.76
  6. Step 6: Final answer
    x = 124,918.81

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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.