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Finding the Fourth Proportional to 156,883.68, 216,501.16 and 85,263.70

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Solution

The fourth proportional to 156,883.68, 216,501.16 and 85,263.70 is: 117,664.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,883.68 : 216,501.16 = 85,263.70 : x
  2. Step 2: Convert to fraction form
    156,883.68/216,501.16 = 85,263.70/x
  3. Step 3: Cross multiply
    156,883.68x = 216,501.16 × 85,263.70
  4. Step 4: Simplify right side
    156,883.68x = 18,459,689,955.89
  5. Step 5: Solve for x
    x = 18,459,689,955.89/156,883.68
  6. Step 6: Final answer
    x = 117,664.82

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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.