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Finding the Fourth Proportional to 97,236.72, 145,855.08 and 31,572.72

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Solution

The fourth proportional to 97,236.72, 145,855.08 and 31,572.72 is: 47,359.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,236.72 : 145,855.08 = 31,572.72 : x
  2. Step 2: Convert to fraction form
    97,236.72/145,855.08 = 31,572.72/x
  3. Step 3: Cross multiply
    97,236.72x = 145,855.08 × 31,572.72
  4. Step 4: Simplify right side
    97,236.72x = 4,605,041,601.42
  5. Step 5: Solve for x
    x = 4,605,041,601.42/97,236.72
  6. Step 6: Final answer
    x = 47,359.08

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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.