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Finding the Fourth Proportional to 128,603.97, 193,030.20 and 62,090.82

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Solution

The fourth proportional to 128,603.97, 193,030.20 and 62,090.82 is: 93,196.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,603.97 : 193,030.20 = 62,090.82 : x
  2. Step 2: Convert to fraction form
    128,603.97/193,030.20 = 62,090.82/x
  3. Step 3: Cross multiply
    128,603.97x = 193,030.20 × 62,090.82
  4. Step 4: Simplify right side
    128,603.97x = 11,985,403,402.76
  5. Step 5: Solve for x
    x = 11,985,403,402.76/128,603.97
  6. Step 6: Final answer
    x = 93,196.22

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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.