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Finding the Fourth Proportional to 7,058.10, 9,720.48 and 6,905.01

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Solution

The fourth proportional to 7,058.10, 9,720.48 and 6,905.01 is: 9,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,058.10 : 9,720.48 = 6,905.01 : x
  2. Step 2: Convert to fraction form
    7,058.10/9,720.48 = 6,905.01/x
  3. Step 3: Cross multiply
    7,058.10x = 9,720.48 × 6,905.01
  4. Step 4: Simplify right side
    7,058.10x = 67,120,011.60
  5. Step 5: Solve for x
    x = 67,120,011.60/7,058.10
  6. Step 6: Final answer
    x = 9,509.64

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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.