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Finding the Fourth Proportional to 235,921, 325,570.98 and 129,937

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Solution

The fourth proportional to 235,921, 325,570.98 and 129,937 is: 179,313.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,921 : 325,570.98 = 129,937 : x
  2. Step 2: Convert to fraction form
    235,921/325,570.98 = 129,937/x
  3. Step 3: Cross multiply
    235,921x = 325,570.98 × 129,937
  4. Step 4: Simplify right side
    235,921x = 42,303,716,428.26
  5. Step 5: Solve for x
    x = 42,303,716,428.26/235,921
  6. Step 6: Final answer
    x = 179,313.06

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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.