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Finding the Fourth Proportional to 223,547.49, 308,489.27 and 122,945.49

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Solution

The fourth proportional to 223,547.49, 308,489.27 and 122,945.49 is: 169,661.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,547.49 : 308,489.27 = 122,945.49 : x
  2. Step 2: Convert to fraction form
    223,547.49/308,489.27 = 122,945.49/x
  3. Step 3: Cross multiply
    223,547.49x = 308,489.27 × 122,945.49
  4. Step 4: Simplify right side
    223,547.49x = 37,927,363,845.16
  5. Step 5: Solve for x
    x = 37,927,363,845.16/223,547.49
  6. Step 6: Final answer
    x = 169,661.33

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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.