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Finding the Fourth Proportional to 610,991.39, 916,487.01 and 190,300.07

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Solution

The fourth proportional to 610,991.39, 916,487.01 and 190,300.07 is: 285,450.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,991.39 : 916,487.01 = 190,300.07 : x
  2. Step 2: Convert to fraction form
    610,991.39/916,487.01 = 190,300.07/x
  3. Step 3: Cross multiply
    610,991.39x = 916,487.01 × 190,300.07
  4. Step 4: Simplify right side
    610,991.39x = 174,407,537,574.66
  5. Step 5: Solve for x
    x = 174,407,537,574.66/610,991.39
  6. Step 6: Final answer
    x = 285,450.08

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Double scale
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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.