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Finding the Fourth Proportional to 620,051.66, 855,605.23 and 348,149.24

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Solution

The fourth proportional to 620,051.66, 855,605.23 and 348,149.24 is: 480,408.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,051.66 : 855,605.23 = 348,149.24 : x
  2. Step 2: Convert to fraction form
    620,051.66/855,605.23 = 348,149.24/x
  3. Step 3: Cross multiply
    620,051.66x = 855,605.23 × 348,149.24
  4. Step 4: Simplify right side
    620,051.66x = 297,878,308,624.65
  5. Step 5: Solve for x
    x = 297,878,308,624.65/620,051.66
  6. Step 6: Final answer
    x = 480,408.86

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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.