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Finding the Fourth Proportional to 317,355.10, 476,151.15 and 127,869.22

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Solution

The fourth proportional to 317,355.10, 476,151.15 and 127,869.22 is: 191,851.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,355.10 : 476,151.15 = 127,869.22 : x
  2. Step 2: Convert to fraction form
    317,355.10/476,151.15 = 127,869.22/x
  3. Step 3: Cross multiply
    317,355.10x = 476,151.15 × 127,869.22
  4. Step 4: Simplify right side
    317,355.10x = 60,885,076,152.60
  5. Step 5: Solve for x
    x = 60,885,076,152.60/317,355.10
  6. Step 6: Final answer
    x = 191,851.58

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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.