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Finding the Fourth Proportional to 5,870.40, 8,810.40 and 5,678.40

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Solution

The fourth proportional to 5,870.40, 8,810.40 and 5,678.40 is: 8,522.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,870.40 : 8,810.40 = 5,678.40 : x
  2. Step 2: Convert to fraction form
    5,870.40/8,810.40 = 5,678.40/x
  3. Step 3: Cross multiply
    5,870.40x = 8,810.40 × 5,678.40
  4. Step 4: Simplify right side
    5,870.40x = 50,028,975.36
  5. Step 5: Solve for x
    x = 50,028,975.36/5,870.40
  6. Step 6: Final answer
    x = 8,522.24

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.