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Finding the Fourth Proportional to 709,703.67, 976,905.11 and 618,899.43

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Solution

The fourth proportional to 709,703.67, 976,905.11 and 618,899.43 is: 851,913.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,703.67 : 976,905.11 = 618,899.43 : x
  2. Step 2: Convert to fraction form
    709,703.67/976,905.11 = 618,899.43/x
  3. Step 3: Cross multiply
    709,703.67x = 976,905.11 × 618,899.43
  4. Step 4: Simplify right side
    709,703.67x = 604,606,017,472.42
  5. Step 5: Solve for x
    x = 604,606,017,472.42/709,703.67
  6. Step 6: Final answer
    x = 851,913.33

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Double scale
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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.