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Finding the Fourth Proportional to 933,665.76, 1,288,386 and 551,620.08

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Solution

The fourth proportional to 933,665.76, 1,288,386 and 551,620.08 is: 761,192.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    933,665.76 : 1,288,386 = 551,620.08 : x
  2. Step 2: Convert to fraction form
    933,665.76/1,288,386 = 551,620.08/x
  3. Step 3: Cross multiply
    933,665.76x = 1,288,386 × 551,620.08
  4. Step 4: Simplify right side
    933,665.76x = 710,699,588,390.88
  5. Step 5: Solve for x
    x = 710,699,588,390.88/933,665.76
  6. Step 6: Final answer
    x = 761,192.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.