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Finding the Fourth Proportional to 532,786.70, 735,260.08 and 318,051.40

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Solution

The fourth proportional to 532,786.70, 735,260.08 and 318,051.40 is: 438,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,786.70 : 735,260.08 = 318,051.40 : x
  2. Step 2: Convert to fraction form
    532,786.70/735,260.08 = 318,051.40/x
  3. Step 3: Cross multiply
    532,786.70x = 735,260.08 × 318,051.40
  4. Step 4: Simplify right side
    532,786.70x = 233,850,497,808.11
  5. Step 5: Solve for x
    x = 233,850,497,808.11/532,786.70
  6. Step 6: Final answer
    x = 438,919.55

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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.