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Finding the Fourth Proportional to 216,826.40, 325,336.80 and 98,436.80

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Solution

The fourth proportional to 216,826.40, 325,336.80 and 98,436.80 is: 147,699.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,826.40 : 325,336.80 = 98,436.80 : x
  2. Step 2: Convert to fraction form
    216,826.40/325,336.80 = 98,436.80/x
  3. Step 3: Cross multiply
    216,826.40x = 325,336.80 × 98,436.80
  4. Step 4: Simplify right side
    216,826.40x = 32,025,113,514.24
  5. Step 5: Solve for x
    x = 32,025,113,514.24/216,826.40
  6. Step 6: Final answer
    x = 147,699.33

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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.