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Finding the Fourth Proportional to 612,136.13, 918,257.11 and 168,904.13

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Solution

The fourth proportional to 612,136.13, 918,257.11 and 168,904.13 is: 253,370.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,136.13 : 918,257.11 = 168,904.13 : x
  2. Step 2: Convert to fraction form
    612,136.13/918,257.11 = 168,904.13/x
  3. Step 3: Cross multiply
    612,136.13x = 918,257.11 × 168,904.13
  4. Step 4: Simplify right side
    612,136.13x = 155,097,413,267.32
  5. Step 5: Solve for x
    x = 155,097,413,267.32/612,136.13
  6. Step 6: Final answer
    x = 253,370.79

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1.5x scale

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.