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Finding the Fourth Proportional to 612,648.20, 916,898.70 and 537,998.60

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Solution

The fourth proportional to 612,648.20, 916,898.70 and 537,998.60 is: 805,176.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,648.20 : 916,898.70 = 537,998.60 : x
  2. Step 2: Convert to fraction form
    612,648.20/916,898.70 = 537,998.60/x
  3. Step 3: Cross multiply
    612,648.20x = 916,898.70 × 537,998.60
  4. Step 4: Simplify right side
    612,648.20x = 493,290,216,941.82
  5. Step 5: Solve for x
    x = 493,290,216,941.82/612,648.20
  6. Step 6: Final answer
    x = 805,176.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.