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Finding the Fourth Proportional to 9,457.88, 13,055.88 and 5,920.28

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Solution

The fourth proportional to 9,457.88, 13,055.88 and 5,920.28 is: 8,172.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,457.88 : 13,055.88 = 5,920.28 : x
  2. Step 2: Convert to fraction form
    9,457.88/13,055.88 = 5,920.28/x
  3. Step 3: Cross multiply
    9,457.88x = 13,055.88 × 5,920.28
  4. Step 4: Simplify right side
    9,457.88x = 77,294,465.25
  5. Step 5: Solve for x
    x = 77,294,465.25/9,457.88
  6. Step 6: Final answer
    x = 8,172.49

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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.