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Finding the Fourth Proportional to 156,590.88, 216,005.04 and 99,938.40

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Solution

The fourth proportional to 156,590.88, 216,005.04 and 99,938.40 is: 137,857.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,590.88 : 216,005.04 = 99,938.40 : x
  2. Step 2: Convert to fraction form
    156,590.88/216,005.04 = 99,938.40/x
  3. Step 3: Cross multiply
    156,590.88x = 216,005.04 × 99,938.40
  4. Step 4: Simplify right side
    156,590.88x = 21,587,198,089.54
  5. Step 5: Solve for x
    x = 21,587,198,089.54/156,590.88
  6. Step 6: Final answer
    x = 137,857.31

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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.