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Finding the Fourth Proportional to 104,931.70, 144,801.52 and 57,184.02

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Solution

The fourth proportional to 104,931.70, 144,801.52 and 57,184.02 is: 78,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,931.70 : 144,801.52 = 57,184.02 : x
  2. Step 2: Convert to fraction form
    104,931.70/144,801.52 = 57,184.02/x
  3. Step 3: Cross multiply
    104,931.70x = 144,801.52 × 57,184.02
  4. Step 4: Simplify right side
    104,931.70x = 8,280,333,015.71
  5. Step 5: Solve for x
    x = 8,280,333,015.71/104,931.70
  6. Step 6: Final answer
    x = 78,911.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.