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Finding the Fourth Proportional to 158,038.41, 218,101.11 and 86,417.67

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Solution

The fourth proportional to 158,038.41, 218,101.11 and 86,417.67 is: 119,260.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,038.41 : 218,101.11 = 86,417.67 : x
  2. Step 2: Convert to fraction form
    158,038.41/218,101.11 = 86,417.67/x
  3. Step 3: Cross multiply
    158,038.41x = 218,101.11 × 86,417.67
  4. Step 4: Simplify right side
    158,038.41x = 18,847,789,750.61
  5. Step 5: Solve for x
    x = 18,847,789,750.61/158,038.41
  6. Step 6: Final answer
    x = 119,260.82

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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.