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Finding the Fourth Proportional to 543,147.12, 749,633.13 and 316,792.62

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Solution

The fourth proportional to 543,147.12, 749,633.13 and 316,792.62 is: 437,226.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,147.12 : 749,633.13 = 316,792.62 : x
  2. Step 2: Convert to fraction form
    543,147.12/749,633.13 = 316,792.62/x
  3. Step 3: Cross multiply
    543,147.12x = 749,633.13 × 316,792.62
  4. Step 4: Simplify right side
    543,147.12x = 237,478,243,291.50
  5. Step 5: Solve for x
    x = 237,478,243,291.50/543,147.12
  6. Step 6: Final answer
    x = 437,226.37

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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.