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Finding the Fourth Proportional to 560,390.94, 773,307.81 and 318,732.30

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Solution

The fourth proportional to 560,390.94, 773,307.81 and 318,732.30 is: 439,832.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,390.94 : 773,307.81 = 318,732.30 : x
  2. Step 2: Convert to fraction form
    560,390.94/773,307.81 = 318,732.30/x
  3. Step 3: Cross multiply
    560,390.94x = 773,307.81 × 318,732.30
  4. Step 4: Simplify right side
    560,390.94x = 246,478,176,889.26
  5. Step 5: Solve for x
    x = 246,478,176,889.26/560,390.94
  6. Step 6: Final answer
    x = 439,832.55

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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.