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Finding the Fourth Proportional to 56,963.95, 85,458.04 and 19,513.98

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Solution

The fourth proportional to 56,963.95, 85,458.04 and 19,513.98 is: 29,275.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,963.95 : 85,458.04 = 19,513.98 : x
  2. Step 2: Convert to fraction form
    56,963.95/85,458.04 = 19,513.98/x
  3. Step 3: Cross multiply
    56,963.95x = 85,458.04 × 19,513.98
  4. Step 4: Simplify right side
    56,963.95x = 1,667,626,483.40
  5. Step 5: Solve for x
    x = 1,667,626,483.40/56,963.95
  6. Step 6: Final answer
    x = 29,275.12

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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.