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Finding the Fourth Proportional to 296,703.92, 445,051.80 and 72,066

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Solution

The fourth proportional to 296,703.92, 445,051.80 and 72,066 is: 108,098.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,703.92 : 445,051.80 = 72,066 : x
  2. Step 2: Convert to fraction form
    296,703.92/445,051.80 = 72,066/x
  3. Step 3: Cross multiply
    296,703.92x = 445,051.80 × 72,066
  4. Step 4: Simplify right side
    296,703.92x = 32,073,103,018.80
  5. Step 5: Solve for x
    x = 32,073,103,018.80/296,703.92
  6. Step 6: Final answer
    x = 108,098.01

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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.