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Finding the Fourth Proportional to 156,886.17, 216,502.91 and 85,266.17

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Solution

The fourth proportional to 156,886.17, 216,502.91 and 85,266.17 is: 117,667.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,886.17 : 216,502.91 = 85,266.17 : x
  2. Step 2: Convert to fraction form
    156,886.17/216,502.91 = 85,266.17/x
  3. Step 3: Cross multiply
    156,886.17x = 216,502.91 × 85,266.17
  4. Step 4: Simplify right side
    156,886.17x = 18,460,373,552.34
  5. Step 5: Solve for x
    x = 18,460,373,552.34/156,886.17
  6. Step 6: Final answer
    x = 117,667.31

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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.