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Finding the Fourth Proportional to 191,485.68, 287,228.68 and 91,622.32

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Solution

The fourth proportional to 191,485.68, 287,228.68 and 91,622.32 is: 137,433.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,485.68 : 287,228.68 = 91,622.32 : x
  2. Step 2: Convert to fraction form
    191,485.68/287,228.68 = 91,622.32/x
  3. Step 3: Cross multiply
    191,485.68x = 287,228.68 × 91,622.32
  4. Step 4: Simplify right side
    191,485.68x = 26,316,558,032.14
  5. Step 5: Solve for x
    x = 26,316,558,032.14/191,485.68
  6. Step 6: Final answer
    x = 137,433.56

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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.