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Finding the Fourth Proportional to 708,313.14, 977,443.61 and 386,016.30

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Solution

The fourth proportional to 708,313.14, 977,443.61 and 386,016.30 is: 532,686.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,313.14 : 977,443.61 = 386,016.30 : x
  2. Step 2: Convert to fraction form
    708,313.14/977,443.61 = 386,016.30/x
  3. Step 3: Cross multiply
    708,313.14x = 977,443.61 × 386,016.30
  4. Step 4: Simplify right side
    708,313.14x = 377,309,163,860.76
  5. Step 5: Solve for x
    x = 377,309,163,860.76/708,313.14
  6. Step 6: Final answer
    x = 532,686.95

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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.