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Finding the Fourth Proportional to 157,208.63, 216,941.11 and 85,588.91

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Solution

The fourth proportional to 157,208.63, 216,941.11 and 85,588.91 is: 118,108.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,208.63 : 216,941.11 = 85,588.91 : x
  2. Step 2: Convert to fraction form
    157,208.63/216,941.11 = 85,588.91/x
  3. Step 3: Cross multiply
    157,208.63x = 216,941.11 × 85,588.91
  4. Step 4: Simplify right side
    157,208.63x = 18,567,751,840.41
  5. Step 5: Solve for x
    x = 18,567,751,840.41/157,208.63
  6. Step 6: Final answer
    x = 118,108.98

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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.