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Finding the Fourth Proportional to 641,140.40, 884,696.66 and 369,296.71

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Solution

The fourth proportional to 641,140.40, 884,696.66 and 369,296.71 is: 509,585.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,140.40 : 884,696.66 = 369,296.71 : x
  2. Step 2: Convert to fraction form
    641,140.40/884,696.66 = 369,296.71/x
  3. Step 3: Cross multiply
    641,140.40x = 884,696.66 × 369,296.71
  4. Step 4: Simplify right side
    641,140.40x = 326,715,559,616.02
  5. Step 5: Solve for x
    x = 326,715,559,616.02/641,140.40
  6. Step 6: Final answer
    x = 509,585.05

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1.5x scale

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.