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Finding the Fourth Proportional to 186,555.59, 257,447.58 and 105,987.53

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Solution

The fourth proportional to 186,555.59, 257,447.58 and 105,987.53 is: 146,263.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,555.59 : 257,447.58 = 105,987.53 : x
  2. Step 2: Convert to fraction form
    186,555.59/257,447.58 = 105,987.53/x
  3. Step 3: Cross multiply
    186,555.59x = 257,447.58 × 105,987.53
  4. Step 4: Simplify right side
    186,555.59x = 27,286,233,752.30
  5. Step 5: Solve for x
    x = 27,286,233,752.30/186,555.59
  6. Step 6: Final answer
    x = 146,263.28

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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.