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Finding the Fourth Proportional to 153,574.16, 211,859.88 and 89,872.52

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Solution

The fourth proportional to 153,574.16, 211,859.88 and 89,872.52 is: 123,981.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,574.16 : 211,859.88 = 89,872.52 : x
  2. Step 2: Convert to fraction form
    153,574.16/211,859.88 = 89,872.52/x
  3. Step 3: Cross multiply
    153,574.16x = 211,859.88 × 89,872.52
  4. Step 4: Simplify right side
    153,574.16x = 19,040,381,302.50
  5. Step 5: Solve for x
    x = 19,040,381,302.50/153,574.16
  6. Step 6: Final answer
    x = 123,981.67

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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.