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Finding the Fourth Proportional to 103,666.67, 143,071.61 and 58,355.67

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Solution

The fourth proportional to 103,666.67, 143,071.61 and 58,355.67 is: 80,537.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,666.67 : 143,071.61 = 58,355.67 : x
  2. Step 2: Convert to fraction form
    103,666.67/143,071.61 = 58,355.67/x
  3. Step 3: Cross multiply
    103,666.67x = 143,071.61 × 58,355.67
  4. Step 4: Simplify right side
    103,666.67x = 8,349,039,659.53
  5. Step 5: Solve for x
    x = 8,349,039,659.53/103,666.67
  6. Step 6: Final answer
    x = 80,537.36

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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.