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Finding the Fourth Proportional to 58,640.80, 82,330.40 and 58,640.80

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Solution

The fourth proportional to 58,640.80, 82,330.40 and 58,640.80 is: 82,330.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,640.80 : 82,330.40 = 58,640.80 : x
  2. Step 2: Convert to fraction form
    58,640.80/82,330.40 = 58,640.80/x
  3. Step 3: Cross multiply
    58,640.80x = 82,330.40 × 58,640.80
  4. Step 4: Simplify right side
    58,640.80x = 4,827,920,520.32
  5. Step 5: Solve for x
    x = 4,827,920,520.32/58,640.80
  6. Step 6: Final answer
    x = 82,330.40

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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.