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Finding the Fourth Proportional to 190,885.60, 286,360.80 and 57,764.80

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Solution

The fourth proportional to 190,885.60, 286,360.80 and 57,764.80 is: 86,657.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,885.60 : 286,360.80 = 57,764.80 : x
  2. Step 2: Convert to fraction form
    190,885.60/286,360.80 = 57,764.80/x
  3. Step 3: Cross multiply
    190,885.60x = 286,360.80 × 57,764.80
  4. Step 4: Simplify right side
    190,885.60x = 16,541,574,339.84
  5. Step 5: Solve for x
    x = 16,541,574,339.84/190,885.60
  6. Step 6: Final answer
    x = 86,657.00

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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.