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Finding the Fourth Proportional to 191,113.60, 286,702.80 and 57,992.80

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Solution

The fourth proportional to 191,113.60, 286,702.80 and 57,992.80 is: 86,999.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,113.60 : 286,702.80 = 57,992.80 : x
  2. Step 2: Convert to fraction form
    191,113.60/286,702.80 = 57,992.80/x
  3. Step 3: Cross multiply
    191,113.60x = 286,702.80 × 57,992.80
  4. Step 4: Simplify right side
    191,113.60x = 16,626,698,139.84
  5. Step 5: Solve for x
    x = 16,626,698,139.84/191,113.60
  6. Step 6: Final answer
    x = 86,999.03

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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.