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Finding the Fourth Proportional to 291,683.64, 439,101.18 and 262,355.16

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Solution

The fourth proportional to 291,683.64, 439,101.18 and 262,355.16 is: 394,950.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,683.64 : 439,101.18 = 262,355.16 : x
  2. Step 2: Convert to fraction form
    291,683.64/439,101.18 = 262,355.16/x
  3. Step 3: Cross multiply
    291,683.64x = 439,101.18 × 262,355.16
  4. Step 4: Simplify right side
    291,683.64x = 115,200,460,335.09
  5. Step 5: Solve for x
    x = 115,200,460,335.09/291,683.64
  6. Step 6: Final answer
    x = 394,950.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.