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Finding the Fourth Proportional to 46,272.99, 69,316.98 and 21,278.77

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Solution

The fourth proportional to 46,272.99, 69,316.98 and 21,278.77 is: 31,875.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,272.99 : 69,316.98 = 21,278.77 : x
  2. Step 2: Convert to fraction form
    46,272.99/69,316.98 = 21,278.77/x
  3. Step 3: Cross multiply
    46,272.99x = 69,316.98 × 21,278.77
  4. Step 4: Simplify right side
    46,272.99x = 1,474,979,941.12
  5. Step 5: Solve for x
    x = 1,474,979,941.12/46,272.99
  6. Step 6: Final answer
    x = 31,875.61

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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.