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Finding the Fourth Proportional to 2,478.79, 3,420.16 and 1,483.93

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Solution

The fourth proportional to 2,478.79, 3,420.16 and 1,483.93 is: 2,047.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.79 : 3,420.16 = 1,483.93 : x
  2. Step 2: Convert to fraction form
    2,478.79/3,420.16 = 1,483.93/x
  3. Step 3: Cross multiply
    2,478.79x = 3,420.16 × 1,483.93
  4. Step 4: Simplify right side
    2,478.79x = 5,075,278.03
  5. Step 5: Solve for x
    x = 5,075,278.03/2,478.79
  6. Step 6: Final answer
    x = 2,047.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.