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Finding the Fourth Proportional to 114,772.56, 158,409.72 and 72,302.64

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Solution

The fourth proportional to 114,772.56, 158,409.72 and 72,302.64 is: 99,792.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,772.56 : 158,409.72 = 72,302.64 : x
  2. Step 2: Convert to fraction form
    114,772.56/158,409.72 = 72,302.64/x
  3. Step 3: Cross multiply
    114,772.56x = 158,409.72 × 72,302.64
  4. Step 4: Simplify right side
    114,772.56x = 11,453,440,957.66
  5. Step 5: Solve for x
    x = 11,453,440,957.66/114,772.56
  6. Step 6: Final answer
    x = 99,792.50

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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.