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Finding the Fourth Proportional to 371,640.91, 512,572.71 and 328,666.36

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Solution

The fourth proportional to 371,640.91, 512,572.71 and 328,666.36 is: 453,301.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,640.91 : 512,572.71 = 328,666.36 : x
  2. Step 2: Convert to fraction form
    371,640.91/512,572.71 = 328,666.36/x
  3. Step 3: Cross multiply
    371,640.91x = 512,572.71 × 328,666.36
  4. Step 4: Simplify right side
    371,640.91x = 168,465,406,831.04
  5. Step 5: Solve for x
    x = 168,465,406,831.04/371,640.91
  6. Step 6: Final answer
    x = 453,301.57

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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.