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Finding the Fourth Proportional to 156,970.85, 220,152.85 and 156,970.85

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Solution

The fourth proportional to 156,970.85, 220,152.85 and 156,970.85 is: 220,152.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,970.85 : 220,152.85 = 156,970.85 : x
  2. Step 2: Convert to fraction form
    156,970.85/220,152.85 = 156,970.85/x
  3. Step 3: Cross multiply
    156,970.85x = 220,152.85 × 156,970.85
  4. Step 4: Simplify right side
    156,970.85x = 34,557,579,994.42
  5. Step 5: Solve for x
    x = 34,557,579,994.42/156,970.85
  6. Step 6: Final answer
    x = 220,152.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.