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Finding the Fourth Proportional to 369,520.90, 553,912.29 and 318,714.15

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Solution

The fourth proportional to 369,520.90, 553,912.29 and 318,714.15 is: 477,752.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,520.90 : 553,912.29 = 318,714.15 : x
  2. Step 2: Convert to fraction form
    369,520.90/553,912.29 = 318,714.15/x
  3. Step 3: Cross multiply
    369,520.90x = 553,912.29 × 318,714.15
  4. Step 4: Simplify right side
    369,520.90x = 176,539,684,681.90
  5. Step 5: Solve for x
    x = 176,539,684,681.90/369,520.90
  6. Step 6: Final answer
    x = 477,752.91

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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.