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Finding the Fourth Proportional to 67,856.60, 93,642.68 and 37,643.90

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Solution

The fourth proportional to 67,856.60, 93,642.68 and 37,643.90 is: 51,948.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,856.60 : 93,642.68 = 37,643.90 : x
  2. Step 2: Convert to fraction form
    67,856.60/93,642.68 = 37,643.90/x
  3. Step 3: Cross multiply
    67,856.60x = 93,642.68 × 37,643.90
  4. Step 4: Simplify right side
    67,856.60x = 3,525,075,681.65
  5. Step 5: Solve for x
    x = 3,525,075,681.65/67,856.60
  6. Step 6: Final answer
    x = 51,948.90

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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.