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Finding the Fourth Proportional to 536,623.28, 803,606.30 and 394,130.66

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Solution

The fourth proportional to 536,623.28, 803,606.30 and 394,130.66 is: 590,220.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,623.28 : 803,606.30 = 394,130.66 : x
  2. Step 2: Convert to fraction form
    536,623.28/803,606.30 = 394,130.66/x
  3. Step 3: Cross multiply
    536,623.28x = 803,606.30 × 394,130.66
  4. Step 4: Simplify right side
    536,623.28x = 316,725,881,399.16
  5. Step 5: Solve for x
    x = 316,725,881,399.16/536,623.28
  6. Step 6: Final answer
    x = 590,220.17

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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.