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Finding the Fourth Proportional to 92,809.16, 128,031.54 and 55,056.68

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Solution

The fourth proportional to 92,809.16, 128,031.54 and 55,056.68 is: 75,951.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,809.16 : 128,031.54 = 55,056.68 : x
  2. Step 2: Convert to fraction form
    92,809.16/128,031.54 = 55,056.68/x
  3. Step 3: Cross multiply
    92,809.16x = 128,031.54 × 55,056.68
  4. Step 4: Simplify right side
    92,809.16x = 7,048,991,527.69
  5. Step 5: Solve for x
    x = 7,048,991,527.69/92,809.16
  6. Step 6: Final answer
    x = 75,951.46

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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.