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Finding the Fourth Proportional to 573,506.64, 791,437.32 and 318,857.76

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Solution

The fourth proportional to 573,506.64, 791,437.32 and 318,857.76 is: 440,022.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,506.64 : 791,437.32 = 318,857.76 : x
  2. Step 2: Convert to fraction form
    573,506.64/791,437.32 = 318,857.76/x
  3. Step 3: Cross multiply
    573,506.64x = 791,437.32 × 318,857.76
  4. Step 4: Simplify right side
    573,506.64x = 252,355,931,035.60
  5. Step 5: Solve for x
    x = 252,355,931,035.60/573,506.64
  6. Step 6: Final answer
    x = 440,022.68

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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.