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Finding the Fourth Proportional to 618,515.61, 853,045.49 and 435,360.49

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Solution

The fourth proportional to 618,515.61, 853,045.49 and 435,360.49 is: 600,441.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,515.61 : 853,045.49 = 435,360.49 : x
  2. Step 2: Convert to fraction form
    618,515.61/853,045.49 = 435,360.49/x
  3. Step 3: Cross multiply
    618,515.61x = 853,045.49 × 435,360.49
  4. Step 4: Simplify right side
    618,515.61x = 371,382,302,518.69
  5. Step 5: Solve for x
    x = 371,382,302,518.69/618,515.61
  6. Step 6: Final answer
    x = 600,441.28

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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.