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Finding the Fourth Proportional to 545,616.90, 817,666.74 and 474,393.60

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Solution

The fourth proportional to 545,616.90, 817,666.74 and 474,393.60 is: 710,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,616.90 : 817,666.74 = 474,393.60 : x
  2. Step 2: Convert to fraction form
    545,616.90/817,666.74 = 474,393.60/x
  3. Step 3: Cross multiply
    545,616.90x = 817,666.74 × 474,393.60
  4. Step 4: Simplify right side
    545,616.90x = 387,895,868,388.86
  5. Step 5: Solve for x
    x = 387,895,868,388.86/545,616.90
  6. Step 6: Final answer
    x = 710,930.82

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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.