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Finding the Fourth Proportional to 156,603.84, 216,113.86 and 84,983.84

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Solution

The fourth proportional to 156,603.84, 216,113.86 and 84,983.84 is: 117,278.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,603.84 : 216,113.86 = 84,983.84 : x
  2. Step 2: Convert to fraction form
    156,603.84/216,113.86 = 84,983.84/x
  3. Step 3: Cross multiply
    156,603.84x = 216,113.86 × 84,983.84
  4. Step 4: Simplify right side
    156,603.84x = 18,366,185,700.02
  5. Step 5: Solve for x
    x = 18,366,185,700.02/156,603.84
  6. Step 6: Final answer
    x = 117,278.01

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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.