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Finding the Fourth Proportional to 186,775.49, 257,714.93 and 111,331.01

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Solution

The fourth proportional to 186,775.49, 257,714.93 and 111,331.01 is: 153,615.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,775.49 : 257,714.93 = 111,331.01 : x
  2. Step 2: Convert to fraction form
    186,775.49/257,714.93 = 111,331.01/x
  3. Step 3: Cross multiply
    186,775.49x = 257,714.93 × 111,331.01
  4. Step 4: Simplify right side
    186,775.49x = 28,691,662,892.32
  5. Step 5: Solve for x
    x = 28,691,662,892.32/186,775.49
  6. Step 6: Final answer
    x = 153,615.78

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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.