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Finding the Fourth Proportional to 562,340.78, 775,477.29 and 515,663.35

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Solution

The fourth proportional to 562,340.78, 775,477.29 and 515,663.35 is: 711,108.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,340.78 : 775,477.29 = 515,663.35 : x
  2. Step 2: Convert to fraction form
    562,340.78/775,477.29 = 515,663.35/x
  3. Step 3: Cross multiply
    562,340.78x = 775,477.29 × 515,663.35
  4. Step 4: Simplify right side
    562,340.78x = 399,885,217,205.37
  5. Step 5: Solve for x
    x = 399,885,217,205.37/562,340.78
  6. Step 6: Final answer
    x = 711,108.34

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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.