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Finding the Fourth Proportional to 563,539.84, 777,802.35 and 518,145.61

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Solution

The fourth proportional to 563,539.84, 777,802.35 and 518,145.61 is: 715,148.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,539.84 : 777,802.35 = 518,145.61 : x
  2. Step 2: Convert to fraction form
    563,539.84/777,802.35 = 518,145.61/x
  3. Step 3: Cross multiply
    563,539.84x = 777,802.35 × 518,145.61
  4. Step 4: Simplify right side
    563,539.84x = 403,014,873,100.18
  5. Step 5: Solve for x
    x = 403,014,873,100.18/563,539.84
  6. Step 6: Final answer
    x = 715,148.86

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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.