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Finding the Fourth Proportional to 85,897.30, 128,854.76 and 29,737.32

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Solution

The fourth proportional to 85,897.30, 128,854.76 and 29,737.32 is: 44,609.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,897.30 : 128,854.76 = 29,737.32 : x
  2. Step 2: Convert to fraction form
    85,897.30/128,854.76 = 29,737.32/x
  3. Step 3: Cross multiply
    85,897.30x = 128,854.76 × 29,737.32
  4. Step 4: Simplify right side
    85,897.30x = 3,831,795,231.64
  5. Step 5: Solve for x
    x = 3,831,795,231.64/85,897.30
  6. Step 6: Final answer
    x = 44,609.03

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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.