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Finding the Fourth Proportional to 638,776.50, 956,171.73 and 470,486.82

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Solution

The fourth proportional to 638,776.50, 956,171.73 and 470,486.82 is: 704,262.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,776.50 : 956,171.73 = 470,486.82 : x
  2. Step 2: Convert to fraction form
    638,776.50/956,171.73 = 470,486.82/x
  3. Step 3: Cross multiply
    638,776.50x = 956,171.73 × 470,486.82
  4. Step 4: Simplify right side
    638,776.50x = 449,866,196,621.60
  5. Step 5: Solve for x
    x = 449,866,196,621.60/638,776.50
  6. Step 6: Final answer
    x = 704,262.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.