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Finding the Fourth Proportional to 153,576.16, 211,862.64 and 89,874.52

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Solution

The fourth proportional to 153,576.16, 211,862.64 and 89,874.52 is: 123,984.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,576.16 : 211,862.64 = 89,874.52 : x
  2. Step 2: Convert to fraction form
    153,576.16/211,862.64 = 89,874.52/x
  3. Step 3: Cross multiply
    153,576.16x = 211,862.64 × 89,874.52
  4. Step 4: Simplify right side
    153,576.16x = 19,041,053,075.93
  5. Step 5: Solve for x
    x = 19,041,053,075.93/153,576.16
  6. Step 6: Final answer
    x = 123,984.43

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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.