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Finding the Fourth Proportional to 219,217.20, 328,825.80 and 174,602.40

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Solution

The fourth proportional to 219,217.20, 328,825.80 and 174,602.40 is: 261,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,217.20 : 328,825.80 = 174,602.40 : x
  2. Step 2: Convert to fraction form
    219,217.20/328,825.80 = 174,602.40/x
  3. Step 3: Cross multiply
    219,217.20x = 328,825.80 × 174,602.40
  4. Step 4: Simplify right side
    219,217.20x = 57,413,773,861.92
  5. Step 5: Solve for x
    x = 57,413,773,861.92/219,217.20
  6. Step 6: Final answer
    x = 261,903.60

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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.