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Finding the Fourth Proportional to 181,005.81, 249,788.07 and 100,433.91

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Solution

The fourth proportional to 181,005.81, 249,788.07 and 100,433.91 is: 138,598.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,005.81 : 249,788.07 = 100,433.91 : x
  2. Step 2: Convert to fraction form
    181,005.81/249,788.07 = 100,433.91/x
  3. Step 3: Cross multiply
    181,005.81x = 249,788.07 × 100,433.91
  4. Step 4: Simplify right side
    181,005.81x = 25,087,192,703.19
  5. Step 5: Solve for x
    x = 25,087,192,703.19/181,005.81
  6. Step 6: Final answer
    x = 138,598.82

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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.