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Finding the Fourth Proportional to 171,636.40, 257,746.20 and 127,313.20

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Solution

The fourth proportional to 171,636.40, 257,746.20 and 127,313.20 is: 191,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,636.40 : 257,746.20 = 127,313.20 : x
  2. Step 2: Convert to fraction form
    171,636.40/257,746.20 = 127,313.20/x
  3. Step 3: Cross multiply
    171,636.40x = 257,746.20 × 127,313.20
  4. Step 4: Simplify right side
    171,636.40x = 32,814,493,509.84
  5. Step 5: Solve for x
    x = 32,814,493,509.84/171,636.40
  6. Step 6: Final answer
    x = 191,186.10

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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.