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Finding the Fourth Proportional to 191,928.64, 287,884.60 and 65,580.16

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Solution

The fourth proportional to 191,928.64, 287,884.60 and 65,580.16 is: 98,367.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,928.64 : 287,884.60 = 65,580.16 : x
  2. Step 2: Convert to fraction form
    191,928.64/287,884.60 = 65,580.16/x
  3. Step 3: Cross multiply
    191,928.64x = 287,884.60 × 65,580.16
  4. Step 4: Simplify right side
    191,928.64x = 18,879,518,129.54
  5. Step 5: Solve for x
    x = 18,879,518,129.54/191,928.64
  6. Step 6: Final answer
    x = 98,367.38

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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.