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Finding the Fourth Proportional to 91,212.48, 125,862.12 and 50,928.48

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Solution

The fourth proportional to 91,212.48, 125,862.12 and 50,928.48 is: 70,275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,212.48 : 125,862.12 = 50,928.48 : x
  2. Step 2: Convert to fraction form
    91,212.48/125,862.12 = 50,928.48/x
  3. Step 3: Cross multiply
    91,212.48x = 125,862.12 × 50,928.48
  4. Step 4: Simplify right side
    91,212.48x = 6,409,966,461.18
  5. Step 5: Solve for x
    x = 6,409,966,461.18/91,212.48
  6. Step 6: Final answer
    x = 70,275.10

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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.