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Finding the Fourth Proportional to 30,459.44, 42,035.66 and 17,030.66

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Solution

The fourth proportional to 30,459.44, 42,035.66 and 17,030.66 is: 23,503.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,459.44 : 42,035.66 = 17,030.66 : x
  2. Step 2: Convert to fraction form
    30,459.44/42,035.66 = 17,030.66/x
  3. Step 3: Cross multiply
    30,459.44x = 42,035.66 × 17,030.66
  4. Step 4: Simplify right side
    30,459.44x = 715,894,801.87
  5. Step 5: Solve for x
    x = 715,894,801.87/30,459.44
  6. Step 6: Final answer
    x = 23,503.21

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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.