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Finding the Fourth Proportional to 1,319,598.54, 1,821,039.57 and 715,986.54

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Solution

The fourth proportional to 1,319,598.54, 1,821,039.57 and 715,986.54 is: 988,057.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,598.54 : 1,821,039.57 = 715,986.54 : x
  2. Step 2: Convert to fraction form
    1,319,598.54/1,821,039.57 = 715,986.54/x
  3. Step 3: Cross multiply
    1,319,598.54x = 1,821,039.57 × 715,986.54
  4. Step 4: Simplify right side
    1,319,598.54x = 1,303,839,820,927.39
  5. Step 5: Solve for x
    x = 1,303,839,820,927.39/1,319,598.54
  6. Step 6: Final answer
    x = 988,057.94

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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.