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Finding the Fourth Proportional to 145,276.54, 217,928.97 and 56,537.26

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Solution

The fourth proportional to 145,276.54, 217,928.97 and 56,537.26 is: 84,811.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,276.54 : 217,928.97 = 56,537.26 : x
  2. Step 2: Convert to fraction form
    145,276.54/217,928.97 = 56,537.26/x
  3. Step 3: Cross multiply
    145,276.54x = 217,928.97 × 56,537.26
  4. Step 4: Simplify right side
    145,276.54x = 12,321,106,838.42
  5. Step 5: Solve for x
    x = 12,321,106,838.42/145,276.54
  6. Step 6: Final answer
    x = 84,811.40

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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.