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Finding the Fourth Proportional to 51,323.94, 70,811.55 and 29,809.53

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Solution

The fourth proportional to 51,323.94, 70,811.55 and 29,809.53 is: 41,128.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,323.94 : 70,811.55 = 29,809.53 : x
  2. Step 2: Convert to fraction form
    51,323.94/70,811.55 = 29,809.53/x
  3. Step 3: Cross multiply
    51,323.94x = 70,811.55 × 29,809.53
  4. Step 4: Simplify right side
    51,323.94x = 2,110,859,024.07
  5. Step 5: Solve for x
    x = 2,110,859,024.07/51,323.94
  6. Step 6: Final answer
    x = 41,128.16

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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.