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Finding the Fourth Proportional to 535,908.55, 739,526.64 and 318,126.53

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Solution

The fourth proportional to 535,908.55, 739,526.64 and 318,126.53 is: 438,998.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,908.55 : 739,526.64 = 318,126.53 : x
  2. Step 2: Convert to fraction form
    535,908.55/739,526.64 = 318,126.53/x
  3. Step 3: Cross multiply
    535,908.55x = 739,526.64 × 318,126.53
  4. Step 4: Simplify right side
    535,908.55x = 235,263,045,674.58
  5. Step 5: Solve for x
    x = 235,263,045,674.58/535,908.55
  6. Step 6: Final answer
    x = 438,998.49

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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.