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Finding the Fourth Proportional to 144,423.76, 216,533.88 and 55,602.64

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Solution

The fourth proportional to 144,423.76, 216,533.88 and 55,602.64 is: 83,364.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,423.76 : 216,533.88 = 55,602.64 : x
  2. Step 2: Convert to fraction form
    144,423.76/216,533.88 = 55,602.64/x
  3. Step 3: Cross multiply
    144,423.76x = 216,533.88 × 55,602.64
  4. Step 4: Simplify right side
    144,423.76x = 12,039,855,377.44
  5. Step 5: Solve for x
    x = 12,039,855,377.44/144,423.76
  6. Step 6: Final answer
    x = 83,364.78

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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.