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Finding the Fourth Proportional to 156,957.40, 216,595.29 and 85,334.95

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Solution

The fourth proportional to 156,957.40, 216,595.29 and 85,334.95 is: 117,759.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,957.40 : 216,595.29 = 85,334.95 : x
  2. Step 2: Convert to fraction form
    156,957.40/216,595.29 = 85,334.95/x
  3. Step 3: Cross multiply
    156,957.40x = 216,595.29 × 85,334.95
  4. Step 4: Simplify right side
    156,957.40x = 18,483,148,242.39
  5. Step 5: Solve for x
    x = 18,483,148,242.39/156,957.40
  6. Step 6: Final answer
    x = 117,759.01

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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.