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Finding the Fourth Proportional to 99,075.66, 136,724.79 and 53,753.95

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Solution

The fourth proportional to 99,075.66, 136,724.79 and 53,753.95 is: 74,180.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,075.66 : 136,724.79 = 53,753.95 : x
  2. Step 2: Convert to fraction form
    99,075.66/136,724.79 = 53,753.95/x
  3. Step 3: Cross multiply
    99,075.66x = 136,724.79 × 53,753.95
  4. Step 4: Simplify right side
    99,075.66x = 7,349,497,828.89
  5. Step 5: Solve for x
    x = 7,349,497,828.89/99,075.66
  6. Step 6: Final answer
    x = 74,180.66

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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.