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Finding the Fourth Proportional to 186,388.36, 257,218.68 and 101,505.22

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Solution

The fourth proportional to 186,388.36, 257,218.68 and 101,505.22 is: 140,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,388.36 : 257,218.68 = 101,505.22 : x
  2. Step 2: Convert to fraction form
    186,388.36/257,218.68 = 101,505.22/x
  3. Step 3: Cross multiply
    186,388.36x = 257,218.68 × 101,505.22
  4. Step 4: Simplify right side
    186,388.36x = 26,109,038,701.51
  5. Step 5: Solve for x
    x = 26,109,038,701.51/186,388.36
  6. Step 6: Final answer
    x = 140,078.70

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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.