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Finding the Fourth Proportional to 163,686.80, 245,530.20 and 111,198.80

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Solution

The fourth proportional to 163,686.80, 245,530.20 and 111,198.80 is: 166,798.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,686.80 : 245,530.20 = 111,198.80 : x
  2. Step 2: Convert to fraction form
    163,686.80/245,530.20 = 111,198.80/x
  3. Step 3: Cross multiply
    163,686.80x = 245,530.20 × 111,198.80
  4. Step 4: Simplify right side
    163,686.80x = 27,302,663,603.76
  5. Step 5: Solve for x
    x = 27,302,663,603.76/163,686.80
  6. Step 6: Final answer
    x = 166,798.20

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1.5x scale

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.