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Finding the Fourth Proportional to 318,696.55, 439,792.70 and 175,457.67

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Solution

The fourth proportional to 318,696.55, 439,792.70 and 175,457.67 is: 242,126.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,696.55 : 439,792.70 = 175,457.67 : x
  2. Step 2: Convert to fraction form
    318,696.55/439,792.70 = 175,457.67/x
  3. Step 3: Cross multiply
    318,696.55x = 439,792.70 × 175,457.67
  4. Step 4: Simplify right side
    318,696.55x = 77,165,002,425.01
  5. Step 5: Solve for x
    x = 77,165,002,425.01/318,696.55
  6. Step 6: Final answer
    x = 242,126.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.