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Finding the Fourth Proportional to 90,430.76, 124,795.95 and 50,146.22

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Solution

The fourth proportional to 90,430.76, 124,795.95 and 50,146.22 is: 69,202.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,430.76 : 124,795.95 = 50,146.22 : x
  2. Step 2: Convert to fraction form
    90,430.76/124,795.95 = 50,146.22/x
  3. Step 3: Cross multiply
    90,430.76x = 124,795.95 × 50,146.22
  4. Step 4: Simplify right side
    90,430.76x = 6,258,045,163.81
  5. Step 5: Solve for x
    x = 6,258,045,163.81/90,430.76
  6. Step 6: Final answer
    x = 69,202.62

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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.