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Finding the Fourth Proportional to 710,736.24, 980,814.36 and 404,812.56

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Solution

The fourth proportional to 710,736.24, 980,814.36 and 404,812.56 is: 558,640.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,736.24 : 980,814.36 = 404,812.56 : x
  2. Step 2: Convert to fraction form
    710,736.24/980,814.36 = 404,812.56/x
  3. Step 3: Cross multiply
    710,736.24x = 980,814.36 × 404,812.56
  4. Step 4: Simplify right side
    710,736.24x = 397,045,971,956.36
  5. Step 5: Solve for x
    x = 397,045,971,956.36/710,736.24
  6. Step 6: Final answer
    x = 558,640.39

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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.