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Finding the Fourth Proportional to 92,697.72, 127,913.28 and 56,889.24

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Solution

The fourth proportional to 92,697.72, 127,913.28 and 56,889.24 is: 78,501.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,697.72 : 127,913.28 = 56,889.24 : x
  2. Step 2: Convert to fraction form
    92,697.72/127,913.28 = 56,889.24/x
  3. Step 3: Cross multiply
    92,697.72x = 127,913.28 × 56,889.24
  4. Step 4: Simplify right side
    92,697.72x = 7,276,889,285.11
  5. Step 5: Solve for x
    x = 7,276,889,285.11/92,697.72
  6. Step 6: Final answer
    x = 78,501.28

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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.