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Finding the Fourth Proportional to 8,368.72, 11,545.54 and 4,831.25

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Solution

The fourth proportional to 8,368.72, 11,545.54 and 4,831.25 is: 6,665.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.72 : 11,545.54 = 4,831.25 : x
  2. Step 2: Convert to fraction form
    8,368.72/11,545.54 = 4,831.25/x
  3. Step 3: Cross multiply
    8,368.72x = 11,545.54 × 4,831.25
  4. Step 4: Simplify right side
    8,368.72x = 55,779,320.32
  5. Step 5: Solve for x
    x = 55,779,320.32/8,368.72
  6. Step 6: Final answer
    x = 6,665.22

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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.