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Finding the Fourth Proportional to 573,148.18, 790,928.76 and 318,492.82

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Solution

The fourth proportional to 573,148.18, 790,928.76 and 318,492.82 is: 439,511.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,148.18 : 790,928.76 = 318,492.82 : x
  2. Step 2: Convert to fraction form
    573,148.18/790,928.76 = 318,492.82/x
  3. Step 3: Cross multiply
    573,148.18x = 790,928.76 × 318,492.82
  4. Step 4: Simplify right side
    573,148.18x = 251,905,131,191.50
  5. Step 5: Solve for x
    x = 251,905,131,191.50/573,148.18
  6. Step 6: Final answer
    x = 439,511.35

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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.