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Finding the Fourth Proportional to 312,885.65, 431,779.59 and 176,946.28

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Solution

The fourth proportional to 312,885.65, 431,779.59 and 176,946.28 is: 244,184.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,885.65 : 431,779.59 = 176,946.28 : x
  2. Step 2: Convert to fraction form
    312,885.65/431,779.59 = 176,946.28/x
  3. Step 3: Cross multiply
    312,885.65x = 431,779.59 × 176,946.28
  4. Step 4: Simplify right side
    312,885.65x = 76,401,792,230.43
  5. Step 5: Solve for x
    x = 76,401,792,230.43/312,885.65
  6. Step 6: Final answer
    x = 244,184.39

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1.5x scale

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.