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Finding the Fourth Proportional to 191,903.60, 287,855.40 and 58,782.80

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Solution

The fourth proportional to 191,903.60, 287,855.40 and 58,782.80 is: 88,174.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,903.60 : 287,855.40 = 58,782.80 : x
  2. Step 2: Convert to fraction form
    191,903.60/287,855.40 = 58,782.80/x
  3. Step 3: Cross multiply
    191,903.60x = 287,855.40 × 58,782.80
  4. Step 4: Simplify right side
    191,903.60x = 16,920,946,407.12
  5. Step 5: Solve for x
    x = 16,920,946,407.12/191,903.60
  6. Step 6: Final answer
    x = 88,174.20

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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.