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Finding the Fourth Proportional to 661,386.06, 912,708.26 and 359,580.06

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Solution

The fourth proportional to 661,386.06, 912,708.26 and 359,580.06 is: 496,218.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,386.06 : 912,708.26 = 359,580.06 : x
  2. Step 2: Convert to fraction form
    661,386.06/912,708.26 = 359,580.06/x
  3. Step 3: Cross multiply
    661,386.06x = 912,708.26 × 359,580.06
  4. Step 4: Simplify right side
    661,386.06x = 328,191,690,893.30
  5. Step 5: Solve for x
    x = 328,191,690,893.30/661,386.06
  6. Step 6: Final answer
    x = 496,218.03

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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.