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Finding the Fourth Proportional to 476,673.72, 714,913.68 and 139,623.86

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Solution

The fourth proportional to 476,673.72, 714,913.68 and 139,623.86 is: 209,407.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,673.72 : 714,913.68 = 139,623.86 : x
  2. Step 2: Convert to fraction form
    476,673.72/714,913.68 = 139,623.86/x
  3. Step 3: Cross multiply
    476,673.72x = 714,913.68 × 139,623.86
  4. Step 4: Simplify right side
    476,673.72x = 99,819,007,568.40
  5. Step 5: Solve for x
    x = 99,819,007,568.40/476,673.72
  6. Step 6: Final answer
    x = 209,407.41

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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.