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Finding the Fourth Proportional to 619,636.44, 855,095.88 and 347,703.69

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Solution

The fourth proportional to 619,636.44, 855,095.88 and 347,703.69 is: 479,829.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,636.44 : 855,095.88 = 347,703.69 : x
  2. Step 2: Convert to fraction form
    619,636.44/855,095.88 = 347,703.69/x
  3. Step 3: Cross multiply
    619,636.44x = 855,095.88 × 347,703.69
  4. Step 4: Simplify right side
    619,636.44x = 297,319,992,779.80
  5. Step 5: Solve for x
    x = 297,319,992,779.80/619,636.44
  6. Step 6: Final answer
    x = 479,829.74

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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.