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Finding the Fourth Proportional to 448,678.50, 619,154.46 and 267,386.28

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Solution

The fourth proportional to 448,678.50, 619,154.46 and 267,386.28 is: 368,980.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,678.50 : 619,154.46 = 267,386.28 : x
  2. Step 2: Convert to fraction form
    448,678.50/619,154.46 = 267,386.28/x
  3. Step 3: Cross multiply
    448,678.50x = 619,154.46 × 267,386.28
  4. Step 4: Simplify right side
    448,678.50x = 165,553,407,804.81
  5. Step 5: Solve for x
    x = 165,553,407,804.81/448,678.50
  6. Step 6: Final answer
    x = 368,980.03

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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.