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Finding the Fourth Proportional to 156,783.48, 216,362.26 and 85,163.48

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Solution

The fourth proportional to 156,783.48, 216,362.26 and 85,163.48 is: 117,526.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,783.48 : 216,362.26 = 85,163.48 : x
  2. Step 2: Convert to fraction form
    156,783.48/216,362.26 = 85,163.48/x
  3. Step 3: Cross multiply
    156,783.48x = 216,362.26 × 85,163.48
  4. Step 4: Simplify right side
    156,783.48x = 18,426,163,002.26
  5. Step 5: Solve for x
    x = 18,426,163,002.26/156,783.48
  6. Step 6: Final answer
    x = 117,526.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.