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Finding the Fourth Proportional to 156,903.80, 216,527.52 and 85,283.63

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Solution

The fourth proportional to 156,903.80, 216,527.52 and 85,283.63 is: 117,691.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,903.80 : 216,527.52 = 85,283.63 : x
  2. Step 2: Convert to fraction form
    156,903.80/216,527.52 = 85,283.63/x
  3. Step 3: Cross multiply
    156,903.80x = 216,527.52 × 85,283.63
  4. Step 4: Simplify right side
    156,903.80x = 18,466,252,900.50
  5. Step 5: Solve for x
    x = 18,466,252,900.50/156,903.80
  6. Step 6: Final answer
    x = 117,691.56

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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.