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Finding the Fourth Proportional to 58,980.42, 81,420.84 and 37,771.92

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Solution

The fourth proportional to 58,980.42, 81,420.84 and 37,771.92 is: 52,143.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,980.42 : 81,420.84 = 37,771.92 : x
  2. Step 2: Convert to fraction form
    58,980.42/81,420.84 = 37,771.92/x
  3. Step 3: Cross multiply
    58,980.42x = 81,420.84 × 37,771.92
  4. Step 4: Simplify right side
    58,980.42x = 3,075,421,454.81
  5. Step 5: Solve for x
    x = 3,075,421,454.81/58,980.42
  6. Step 6: Final answer
    x = 52,143.09

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1.5x scale

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.