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Finding the Fourth Proportional to 141,959.57, 212,859.51 and 47,139.01

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Solution

The fourth proportional to 141,959.57, 212,859.51 and 47,139.01 is: 70,682.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,959.57 : 212,859.51 = 47,139.01 : x
  2. Step 2: Convert to fraction form
    141,959.57/212,859.51 = 47,139.01/x
  3. Step 3: Cross multiply
    141,959.57x = 212,859.51 × 47,139.01
  4. Step 4: Simplify right side
    141,959.57x = 10,033,985,920.49
  5. Step 5: Solve for x
    x = 10,033,985,920.49/141,959.57
  6. Step 6: Final answer
    x = 70,682.00

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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.