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Finding the Fourth Proportional to 611,250.60, 917,135.10 and 386,783.40

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Solution

The fourth proportional to 611,250.60, 917,135.10 and 386,783.40 is: 580,339.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,250.60 : 917,135.10 = 386,783.40 : x
  2. Step 2: Convert to fraction form
    611,250.60/917,135.10 = 386,783.40/x
  3. Step 3: Cross multiply
    611,250.60x = 917,135.10 × 386,783.40
  4. Step 4: Simplify right side
    611,250.60x = 354,732,632,237.34
  5. Step 5: Solve for x
    x = 354,732,632,237.34/611,250.60
  6. Step 6: Final answer
    x = 580,339.11

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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.