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Finding the Fourth Proportional to 191,809.20, 287,735.40 and 58,688.40

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Solution

The fourth proportional to 191,809.20, 287,735.40 and 58,688.40 is: 88,039.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,809.20 : 287,735.40 = 58,688.40 : x
  2. Step 2: Convert to fraction form
    191,809.20/287,735.40 = 58,688.40/x
  3. Step 3: Cross multiply
    191,809.20x = 287,735.40 × 58,688.40
  4. Step 4: Simplify right side
    191,809.20x = 16,886,730,249.36
  5. Step 5: Solve for x
    x = 16,886,730,249.36/191,809.20
  6. Step 6: Final answer
    x = 88,039.21

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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.