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Finding the Fourth Proportional to 590,962.20, 886,443.30 and 402,005.40

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Solution

The fourth proportional to 590,962.20, 886,443.30 and 402,005.40 is: 603,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,962.20 : 886,443.30 = 402,005.40 : x
  2. Step 2: Convert to fraction form
    590,962.20/886,443.30 = 402,005.40/x
  3. Step 3: Cross multiply
    590,962.20x = 886,443.30 × 402,005.40
  4. Step 4: Simplify right side
    590,962.20x = 356,354,993,393.82
  5. Step 5: Solve for x
    x = 356,354,993,393.82/590,962.20
  6. Step 6: Final answer
    x = 603,008.10

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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.