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Finding the Fourth Proportional to 317,761, 476,707.14 and 93,128.80

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Solution

The fourth proportional to 317,761, 476,707.14 and 93,128.80 is: 139,712.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,761 : 476,707.14 = 93,128.80 : x
  2. Step 2: Convert to fraction form
    317,761/476,707.14 = 93,128.80/x
  3. Step 3: Cross multiply
    317,761x = 476,707.14 × 93,128.80
  4. Step 4: Simplify right side
    317,761x = 44,395,163,899.63
  5. Step 5: Solve for x
    x = 44,395,163,899.63/317,761
  6. Step 6: Final answer
    x = 139,712.44

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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.