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Finding the Fourth Proportional to 21,831.32, 32,751.66 and 7,041.08

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Solution

The fourth proportional to 21,831.32, 32,751.66 and 7,041.08 is: 10,563.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.32 : 32,751.66 = 7,041.08 : x
  2. Step 2: Convert to fraction form
    21,831.32/32,751.66 = 7,041.08/x
  3. Step 3: Cross multiply
    21,831.32x = 32,751.66 × 7,041.08
  4. Step 4: Simplify right side
    21,831.32x = 230,607,058.19
  5. Step 5: Solve for x
    x = 230,607,058.19/21,831.32
  6. Step 6: Final answer
    x = 10,563.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.