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Finding the Fourth Proportional to 554,622.42, 765,378.36 and 299,973

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Solution

The fourth proportional to 554,622.42, 765,378.36 and 299,973 is: 413,962.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,622.42 : 765,378.36 = 299,973 : x
  2. Step 2: Convert to fraction form
    554,622.42/765,378.36 = 299,973/x
  3. Step 3: Cross multiply
    554,622.42x = 765,378.36 × 299,973
  4. Step 4: Simplify right side
    554,622.42x = 229,592,842,784.28
  5. Step 5: Solve for x
    x = 229,592,842,784.28/554,622.42
  6. Step 6: Final answer
    x = 413,962.43

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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.