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Finding the Fourth Proportional to 249,846.40, 375,061.20 and 143,315.20

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Solution

The fourth proportional to 249,846.40, 375,061.20 and 143,315.20 is: 215,140.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,846.40 : 375,061.20 = 143,315.20 : x
  2. Step 2: Convert to fraction form
    249,846.40/375,061.20 = 143,315.20/x
  3. Step 3: Cross multiply
    249,846.40x = 375,061.20 × 143,315.20
  4. Step 4: Simplify right side
    249,846.40x = 53,751,970,890.24
  5. Step 5: Solve for x
    x = 53,751,970,890.24/249,846.40
  6. Step 6: Final answer
    x = 215,140.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.