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Finding the Fourth Proportional to 191,889.60, 287,834.40 and 98,577.60

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Solution

The fourth proportional to 191,889.60, 287,834.40 and 98,577.60 is: 147,866.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,889.60 : 287,834.40 = 98,577.60 : x
  2. Step 2: Convert to fraction form
    191,889.60/287,834.40 = 98,577.60/x
  3. Step 3: Cross multiply
    191,889.60x = 287,834.40 × 98,577.60
  4. Step 4: Simplify right side
    191,889.60x = 28,374,024,349.44
  5. Step 5: Solve for x
    x = 28,374,024,349.44/191,889.60
  6. Step 6: Final answer
    x = 147,866.40

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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.