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Finding the Fourth Proportional to 186,321.93, 257,124.30 and 101,439

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Solution

The fourth proportional to 186,321.93, 257,124.30 and 101,439 is: 139,985.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,321.93 : 257,124.30 = 101,439 : x
  2. Step 2: Convert to fraction form
    186,321.93/257,124.30 = 101,439/x
  3. Step 3: Cross multiply
    186,321.93x = 257,124.30 × 101,439
  4. Step 4: Simplify right side
    186,321.93x = 26,082,431,867.70
  5. Step 5: Solve for x
    x = 26,082,431,867.70/186,321.93
  6. Step 6: Final answer
    x = 139,985.84

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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.