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Finding the Fourth Proportional to 190,705.70, 286,060.72 and 57,587.06

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Solution

The fourth proportional to 190,705.70, 286,060.72 and 57,587.06 is: 86,381.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,705.70 : 286,060.72 = 57,587.06 : x
  2. Step 2: Convert to fraction form
    190,705.70/286,060.72 = 57,587.06/x
  3. Step 3: Cross multiply
    190,705.70x = 286,060.72 × 57,587.06
  4. Step 4: Simplify right side
    190,705.70x = 16,473,395,846.28
  5. Step 5: Solve for x
    x = 16,473,395,846.28/190,705.70
  6. Step 6: Final answer
    x = 86,381.25

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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.