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Finding the Fourth Proportional to 637,985.40, 956,103.30 and 519,887.40

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Solution

The fourth proportional to 637,985.40, 956,103.30 and 519,887.40 is: 779,118.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,985.40 : 956,103.30 = 519,887.40 : x
  2. Step 2: Convert to fraction form
    637,985.40/956,103.30 = 519,887.40/x
  3. Step 3: Cross multiply
    637,985.40x = 956,103.30 × 519,887.40
  4. Step 4: Simplify right side
    637,985.40x = 497,066,058,768.42
  5. Step 5: Solve for x
    x = 497,066,058,768.42/637,985.40
  6. Step 6: Final answer
    x = 779,118.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.