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Finding the Fourth Proportional to 768,220.32, 1,060,598.16 and 553,913.76

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Solution

The fourth proportional to 768,220.32, 1,060,598.16 and 553,913.76 is: 764,728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,220.32 : 1,060,598.16 = 553,913.76 : x
  2. Step 2: Convert to fraction form
    768,220.32/1,060,598.16 = 553,913.76/x
  3. Step 3: Cross multiply
    768,220.32x = 1,060,598.16 × 553,913.76
  4. Step 4: Simplify right side
    768,220.32x = 587,479,914,654.68
  5. Step 5: Solve for x
    x = 587,479,914,654.68/768,220.32
  6. Step 6: Final answer
    x = 764,728.42

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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.