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Finding the Fourth Proportional to 18,547.68, 25,598.40 and 11,831.16

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Solution

The fourth proportional to 18,547.68, 25,598.40 and 11,831.16 is: 16,328.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,547.68 : 25,598.40 = 11,831.16 : x
  2. Step 2: Convert to fraction form
    18,547.68/25,598.40 = 11,831.16/x
  3. Step 3: Cross multiply
    18,547.68x = 25,598.40 × 11,831.16
  4. Step 4: Simplify right side
    18,547.68x = 302,858,766.14
  5. Step 5: Solve for x
    x = 302,858,766.14/18,547.68
  6. Step 6: Final answer
    x = 16,328.66

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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.