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Finding the Fourth Proportional to 347,617.10, 487,713.70 and 347,617.10

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Solution

The fourth proportional to 347,617.10, 487,713.70 and 347,617.10 is: 487,713.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,617.10 : 487,713.70 = 347,617.10 : x
  2. Step 2: Convert to fraction form
    347,617.10/487,713.70 = 347,617.10/x
  3. Step 3: Cross multiply
    347,617.10x = 487,713.70 × 347,617.10
  4. Step 4: Simplify right side
    347,617.10x = 169,537,622,024.27
  5. Step 5: Solve for x
    x = 169,537,622,024.27/347,617.10
  6. Step 6: Final answer
    x = 487,713.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.