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Finding the Fourth Proportional to 65,628.40, 92,142.20 and 65,628.40

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Solution

The fourth proportional to 65,628.40, 92,142.20 and 65,628.40 is: 92,142.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,628.40 : 92,142.20 = 65,628.40 : x
  2. Step 2: Convert to fraction form
    65,628.40/92,142.20 = 65,628.40/x
  3. Step 3: Cross multiply
    65,628.40x = 92,142.20 × 65,628.40
  4. Step 4: Simplify right side
    65,628.40x = 6,047,145,158.48
  5. Step 5: Solve for x
    x = 6,047,145,158.48/65,628.40
  6. Step 6: Final answer
    x = 92,142.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.