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Finding the Fourth Proportional to 705,368.56, 973,376.06 and 399,437.94

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Solution

The fourth proportional to 705,368.56, 973,376.06 and 399,437.94 is: 551,205.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,368.56 : 973,376.06 = 399,437.94 : x
  2. Step 2: Convert to fraction form
    705,368.56/973,376.06 = 399,437.94/x
  3. Step 3: Cross multiply
    705,368.56x = 973,376.06 × 399,437.94
  4. Step 4: Simplify right side
    705,368.56x = 388,803,327,565.36
  5. Step 5: Solve for x
    x = 388,803,327,565.36/705,368.56
  6. Step 6: Final answer
    x = 551,205.92

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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.