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Finding the Fourth Proportional to 543,521.65, 811,622.51 and 443,879.65

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Solution

The fourth proportional to 543,521.65, 811,622.51 and 443,879.65 is: 662,830.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,521.65 : 811,622.51 = 443,879.65 : x
  2. Step 2: Convert to fraction form
    543,521.65/811,622.51 = 443,879.65/x
  3. Step 3: Cross multiply
    543,521.65x = 811,622.51 × 443,879.65
  4. Step 4: Simplify right side
    543,521.65x = 360,262,715,670.92
  5. Step 5: Solve for x
    x = 360,262,715,670.92/543,521.65
  6. Step 6: Final answer
    x = 662,830.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.