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Finding the Fourth Proportional to 91,248, 125,922.30 and 51,504

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Solution

The fourth proportional to 91,248, 125,922.30 and 51,504 is: 71,075.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,248 : 125,922.30 = 51,504 : x
  2. Step 2: Convert to fraction form
    91,248/125,922.30 = 51,504/x
  3. Step 3: Cross multiply
    91,248x = 125,922.30 × 51,504
  4. Step 4: Simplify right side
    91,248x = 6,485,502,139.20
  5. Step 5: Solve for x
    x = 6,485,502,139.20/91,248
  6. Step 6: Final answer
    x = 71,075.55

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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.