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Finding the Fourth Proportional to 628,281.39, 866,639.54 and 547,901.85

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Solution

The fourth proportional to 628,281.39, 866,639.54 and 547,901.85 is: 755,765.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,281.39 : 866,639.54 = 547,901.85 : x
  2. Step 2: Convert to fraction form
    628,281.39/866,639.54 = 547,901.85/x
  3. Step 3: Cross multiply
    628,281.39x = 866,639.54 × 547,901.85
  4. Step 4: Simplify right side
    628,281.39x = 474,833,404,509.64
  5. Step 5: Solve for x
    x = 474,833,404,509.64/628,281.39
  6. Step 6: Final answer
    x = 755,765.51

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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.