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Finding the Fourth Proportional to 46,541.40, 69,812.10 and 18,839.40

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Solution

The fourth proportional to 46,541.40, 69,812.10 and 18,839.40 is: 28,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,541.40 : 69,812.10 = 18,839.40 : x
  2. Step 2: Convert to fraction form
    46,541.40/69,812.10 = 18,839.40/x
  3. Step 3: Cross multiply
    46,541.40x = 69,812.10 × 18,839.40
  4. Step 4: Simplify right side
    46,541.40x = 1,315,218,076.74
  5. Step 5: Solve for x
    x = 1,315,218,076.74/46,541.40
  6. Step 6: Final answer
    x = 28,259.10

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1.5x scale

Why These Related Problems?

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