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Finding the Fourth Proportional to 403,113.20, 604,864.20 and 284,529.20

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Solution

The fourth proportional to 403,113.20, 604,864.20 and 284,529.20 is: 426,931.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,113.20 : 604,864.20 = 284,529.20 : x
  2. Step 2: Convert to fraction form
    403,113.20/604,864.20 = 284,529.20/x
  3. Step 3: Cross multiply
    403,113.20x = 604,864.20 × 284,529.20
  4. Step 4: Simplify right side
    403,113.20x = 172,101,526,934.64
  5. Step 5: Solve for x
    x = 172,101,526,934.64/403,113.20
  6. Step 6: Final answer
    x = 426,931.01

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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.