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Finding the Fourth Proportional to 74,856.96, 103,391.64 and 54,681.48

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Solution

The fourth proportional to 74,856.96, 103,391.64 and 54,681.48 is: 75,525.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,856.96 : 103,391.64 = 54,681.48 : x
  2. Step 2: Convert to fraction form
    74,856.96/103,391.64 = 54,681.48/x
  3. Step 3: Cross multiply
    74,856.96x = 103,391.64 × 54,681.48
  4. Step 4: Simplify right side
    74,856.96x = 5,653,607,894.83
  5. Step 5: Solve for x
    x = 5,653,607,894.83/74,856.96
  6. Step 6: Final answer
    x = 75,525.48

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1.5x scale

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.