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Finding the Fourth Proportional to 586,218.90, 879,433.64 and 207,359.22

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Solution

The fourth proportional to 586,218.90, 879,433.64 and 207,359.22 is: 311,076.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,218.90 : 879,433.64 = 207,359.22 : x
  2. Step 2: Convert to fraction form
    586,218.90/879,433.64 = 207,359.22/x
  3. Step 3: Cross multiply
    586,218.90x = 879,433.64 × 207,359.22
  4. Step 4: Simplify right side
    586,218.90x = 182,358,673,632.16
  5. Step 5: Solve for x
    x = 182,358,673,632.16/586,218.90
  6. Step 6: Final answer
    x = 311,076.07

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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.