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Finding the Fourth Proportional to 186,343.80, 257,177.58 and 105,797.40

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Solution

The fourth proportional to 186,343.80, 257,177.58 and 105,797.40 is: 146,013.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,343.80 : 257,177.58 = 105,797.40 : x
  2. Step 2: Convert to fraction form
    186,343.80/257,177.58 = 105,797.40/x
  3. Step 3: Cross multiply
    186,343.80x = 257,177.58 × 105,797.40
  4. Step 4: Simplify right side
    186,343.80x = 27,208,719,302.29
  5. Step 5: Solve for x
    x = 27,208,719,302.29/186,343.80
  6. Step 6: Final answer
    x = 146,013.55

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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.