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Finding the Fourth Proportional to 7,042.74, 9,710.16 and 4,520.40

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Solution

The fourth proportional to 7,042.74, 9,710.16 and 4,520.40 is: 6,232.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.74 : 9,710.16 = 4,520.40 : x
  2. Step 2: Convert to fraction form
    7,042.74/9,710.16 = 4,520.40/x
  3. Step 3: Cross multiply
    7,042.74x = 9,710.16 × 4,520.40
  4. Step 4: Simplify right side
    7,042.74x = 43,893,807.26
  5. Step 5: Solve for x
    x = 43,893,807.26/7,042.74
  6. Step 6: Final answer
    x = 6,232.49

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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.