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Finding the Fourth Proportional to 186,128.23, 256,858.95 and 101,245.51

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Solution

The fourth proportional to 186,128.23, 256,858.95 and 101,245.51 is: 139,719.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,128.23 : 256,858.95 = 101,245.51 : x
  2. Step 2: Convert to fraction form
    186,128.23/256,858.95 = 101,245.51/x
  3. Step 3: Cross multiply
    186,128.23x = 256,858.95 × 101,245.51
  4. Step 4: Simplify right side
    186,128.23x = 26,005,815,390.81
  5. Step 5: Solve for x
    x = 26,005,815,390.81/186,128.23
  6. Step 6: Final answer
    x = 139,719.89

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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.