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Finding the Fourth Proportional to 92,361.58, 138,556.95 and 30,017.50

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Solution

The fourth proportional to 92,361.58, 138,556.95 and 30,017.50 is: 45,030.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,361.58 : 138,556.95 = 30,017.50 : x
  2. Step 2: Convert to fraction form
    92,361.58/138,556.95 = 30,017.50/x
  3. Step 3: Cross multiply
    92,361.58x = 138,556.95 × 30,017.50
  4. Step 4: Simplify right side
    92,361.58x = 4,159,133,246.63
  5. Step 5: Solve for x
    x = 4,159,133,246.63/92,361.58
  6. Step 6: Final answer
    x = 45,030.99

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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.