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Finding the Fourth Proportional to 611,599.47, 916,624.20 and 345,509.91

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Solution

The fourth proportional to 611,599.47, 916,624.20 and 345,509.91 is: 517,827.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,599.47 : 916,624.20 = 345,509.91 : x
  2. Step 2: Convert to fraction form
    611,599.47/916,624.20 = 345,509.91/x
  3. Step 3: Cross multiply
    611,599.47x = 916,624.20 × 345,509.91
  4. Step 4: Simplify right side
    611,599.47x = 316,702,744,845.82
  5. Step 5: Solve for x
    x = 316,702,744,845.82/611,599.47
  6. Step 6: Final answer
    x = 517,827.04

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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.