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Finding the Fourth Proportional to 768,165.84, 1,059,816.02 and 496,393.83

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Solution

The fourth proportional to 768,165.84, 1,059,816.02 and 496,393.83 is: 684,860.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,165.84 : 1,059,816.02 = 496,393.83 : x
  2. Step 2: Convert to fraction form
    768,165.84/1,059,816.02 = 496,393.83/x
  3. Step 3: Cross multiply
    768,165.84x = 1,059,816.02 × 496,393.83
  4. Step 4: Simplify right side
    768,165.84x = 526,086,130,781.19
  5. Step 5: Solve for x
    x = 526,086,130,781.19/768,165.84
  6. Step 6: Final answer
    x = 684,860.10

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1.5x scale

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.