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Finding the Fourth Proportional to 85,953.58, 128,877.36 and 29,780.62

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Solution

The fourth proportional to 85,953.58, 128,877.36 and 29,780.62 is: 44,652.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,953.58 : 128,877.36 = 29,780.62 : x
  2. Step 2: Convert to fraction form
    85,953.58/128,877.36 = 29,780.62/x
  3. Step 3: Cross multiply
    85,953.58x = 128,877.36 × 29,780.62
  4. Step 4: Simplify right side
    85,953.58x = 3,838,047,684.76
  5. Step 5: Solve for x
    x = 3,838,047,684.76/85,953.58
  6. Step 6: Final answer
    x = 44,652.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.