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Finding the Fourth Proportional to 201,557.91, 302,380.59 and 61,312.89

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Solution

The fourth proportional to 201,557.91, 302,380.59 and 61,312.89 is: 91,982.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,557.91 : 302,380.59 = 61,312.89 : x
  2. Step 2: Convert to fraction form
    201,557.91/302,380.59 = 61,312.89/x
  3. Step 3: Cross multiply
    201,557.91x = 302,380.59 × 61,312.89
  4. Step 4: Simplify right side
    201,557.91x = 18,539,827,852.81
  5. Step 5: Solve for x
    x = 18,539,827,852.81/201,557.91
  6. Step 6: Final answer
    x = 91,982.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.