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Finding the Fourth Proportional to 7,039.19, 9,702.93 and 5,545.14

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Solution

The fourth proportional to 7,039.19, 9,702.93 and 5,545.14 is: 7,643.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.19 : 9,702.93 = 5,545.14 : x
  2. Step 2: Convert to fraction form
    7,039.19/9,702.93 = 5,545.14/x
  3. Step 3: Cross multiply
    7,039.19x = 9,702.93 × 5,545.14
  4. Step 4: Simplify right side
    7,039.19x = 53,804,105.26
  5. Step 5: Solve for x
    x = 53,804,105.26/7,039.19
  6. Step 6: Final answer
    x = 7,643.51

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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.