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Finding the Fourth Proportional to 357,622.74, 536,434.57 and 91,383.51

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Solution

The fourth proportional to 357,622.74, 536,434.57 and 91,383.51 is: 137,075.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,622.74 : 536,434.57 = 91,383.51 : x
  2. Step 2: Convert to fraction form
    357,622.74/536,434.57 = 91,383.51/x
  3. Step 3: Cross multiply
    357,622.74x = 536,434.57 × 91,383.51
  4. Step 4: Simplify right side
    357,622.74x = 49,021,276,017.80
  5. Step 5: Solve for x
    x = 49,021,276,017.80/357,622.74
  6. Step 6: Final answer
    x = 137,075.39

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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.