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Finding the Fourth Proportional to 249,019.20, 373,528.80 and 82,807.20

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Solution

The fourth proportional to 249,019.20, 373,528.80 and 82,807.20 is: 124,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,019.20 : 373,528.80 = 82,807.20 : x
  2. Step 2: Convert to fraction form
    249,019.20/373,528.80 = 82,807.20/x
  3. Step 3: Cross multiply
    249,019.20x = 373,528.80 × 82,807.20
  4. Step 4: Simplify right side
    249,019.20x = 30,930,874,047.36
  5. Step 5: Solve for x
    x = 30,930,874,047.36/249,019.20
  6. Step 6: Final answer
    x = 124,210.80

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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.