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Finding the Fourth Proportional to 935,784.60, 1,401,708.60 and 778,320.60

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Solution

The fourth proportional to 935,784.60, 1,401,708.60 and 778,320.60 is: 1,165,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,784.60 : 1,401,708.60 = 778,320.60 : x
  2. Step 2: Convert to fraction form
    935,784.60/1,401,708.60 = 778,320.60/x
  3. Step 3: Cross multiply
    935,784.60x = 1,401,708.60 × 778,320.60
  4. Step 4: Simplify right side
    935,784.60x = 1,090,978,678,577.16
  5. Step 5: Solve for x
    x = 1,090,978,678,577.16/935,784.60
  6. Step 6: Final answer
    x = 1,165,843.80

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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.