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Finding the Fourth Proportional to 573,011.70, 860,435.55 and 455,658.90

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Solution

The fourth proportional to 573,011.70, 860,435.55 and 455,658.90 is: 684,218.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,011.70 : 860,435.55 = 455,658.90 : x
  2. Step 2: Convert to fraction form
    573,011.70/860,435.55 = 455,658.90/x
  3. Step 3: Cross multiply
    573,011.70x = 860,435.55 × 455,658.90
  4. Step 4: Simplify right side
    573,011.70x = 392,065,116,233.90
  5. Step 5: Solve for x
    x = 392,065,116,233.90/573,011.70
  6. Step 6: Final answer
    x = 684,218.34

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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.