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Finding the Fourth Proportional to 207,528.96, 286,373.76 and 116,880

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Solution

The fourth proportional to 207,528.96, 286,373.76 and 116,880 is: 161,285.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,528.96 : 286,373.76 = 116,880 : x
  2. Step 2: Convert to fraction form
    207,528.96/286,373.76 = 116,880/x
  3. Step 3: Cross multiply
    207,528.96x = 286,373.76 × 116,880
  4. Step 4: Simplify right side
    207,528.96x = 33,471,365,068.80
  5. Step 5: Solve for x
    x = 33,471,365,068.80/207,528.96
  6. Step 6: Final answer
    x = 161,285.27

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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.