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Finding the Fourth Proportional to 181,100.31, 249,891.80 and 100,528.47

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Solution

The fourth proportional to 181,100.31, 249,891.80 and 100,528.47 is: 138,714.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,100.31 : 249,891.80 = 100,528.47 : x
  2. Step 2: Convert to fraction form
    181,100.31/249,891.80 = 100,528.47/x
  3. Step 3: Cross multiply
    181,100.31x = 249,891.80 × 100,528.47
  4. Step 4: Simplify right side
    181,100.31x = 25,121,239,816.90
  5. Step 5: Solve for x
    x = 25,121,239,816.90/181,100.31
  6. Step 6: Final answer
    x = 138,714.50

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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.