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Finding the Fourth Proportional to 166,554.40, 249,745.20 and 61,319.20

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Solution

The fourth proportional to 166,554.40, 249,745.20 and 61,319.20 is: 91,946.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,554.40 : 249,745.20 = 61,319.20 : x
  2. Step 2: Convert to fraction form
    166,554.40/249,745.20 = 61,319.20/x
  3. Step 3: Cross multiply
    166,554.40x = 249,745.20 × 61,319.20
  4. Step 4: Simplify right side
    166,554.40x = 15,314,175,867.84
  5. Step 5: Solve for x
    x = 15,314,175,867.84/166,554.40
  6. Step 6: Final answer
    x = 91,946.99

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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.