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Finding the Fourth Proportional to 219,154.80, 329,039.40 and 136,210.80

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Solution

The fourth proportional to 219,154.80, 329,039.40 and 136,210.80 is: 204,507.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,154.80 : 329,039.40 = 136,210.80 : x
  2. Step 2: Convert to fraction form
    219,154.80/329,039.40 = 136,210.80/x
  3. Step 3: Cross multiply
    219,154.80x = 329,039.40 × 136,210.80
  4. Step 4: Simplify right side
    219,154.80x = 44,818,719,905.52
  5. Step 5: Solve for x
    x = 44,818,719,905.52/219,154.80
  6. Step 6: Final answer
    x = 204,507.13

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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.