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Finding the Fourth Proportional to 570,916.60, 856,106.70 and 331,098.66

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Solution

The fourth proportional to 570,916.60, 856,106.70 and 331,098.66 is: 496,492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,916.60 : 856,106.70 = 331,098.66 : x
  2. Step 2: Convert to fraction form
    570,916.60/856,106.70 = 331,098.66/x
  3. Step 3: Cross multiply
    570,916.60x = 856,106.70 × 331,098.66
  4. Step 4: Simplify right side
    570,916.60x = 283,455,781,187.02
  5. Step 5: Solve for x
    x = 283,455,781,187.02/570,916.60
  6. Step 6: Final answer
    x = 496,492.45

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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.