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Finding the Fourth Proportional to 759,262, 1,047,690.60 and 419,684.08

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Solution

The fourth proportional to 759,262, 1,047,690.60 and 419,684.08 is: 579,113.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,262 : 1,047,690.60 = 419,684.08 : x
  2. Step 2: Convert to fraction form
    759,262/1,047,690.60 = 419,684.08/x
  3. Step 3: Cross multiply
    759,262x = 1,047,690.60 × 419,684.08
  4. Step 4: Simplify right side
    759,262x = 439,699,065,585.65
  5. Step 5: Solve for x
    x = 439,699,065,585.65/759,262
  6. Step 6: Final answer
    x = 579,113.75

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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.