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Finding the Fourth Proportional to 103,281.66, 154,531.53 and 61,184.34

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Solution

The fourth proportional to 103,281.66, 154,531.53 and 61,184.34 is: 91,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,281.66 : 154,531.53 = 61,184.34 : x
  2. Step 2: Convert to fraction form
    103,281.66/154,531.53 = 61,184.34/x
  3. Step 3: Cross multiply
    103,281.66x = 154,531.53 × 61,184.34
  4. Step 4: Simplify right side
    103,281.66x = 9,454,909,672.24
  5. Step 5: Solve for x
    x = 9,454,909,672.24/103,281.66
  6. Step 6: Final answer
    x = 91,544.90

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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.