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Finding the Fourth Proportional to 610,748.79, 916,123.19 and 189,940.83

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Solution

The fourth proportional to 610,748.79, 916,123.19 and 189,940.83 is: 284,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,748.79 : 916,123.19 = 189,940.83 : x
  2. Step 2: Convert to fraction form
    610,748.79/916,123.19 = 189,940.83/x
  3. Step 3: Cross multiply
    610,748.79x = 916,123.19 × 189,940.83
  4. Step 4: Simplify right side
    610,748.79x = 174,009,198,141.14
  5. Step 5: Solve for x
    x = 174,009,198,141.14/610,748.79
  6. Step 6: Final answer
    x = 284,911.25

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Similar ratio
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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.