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Finding the Fourth Proportional to 696,655.56, 961,372.13 and 390,732.53

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Solution

The fourth proportional to 696,655.56, 961,372.13 and 390,732.53 is: 539,203.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,655.56 : 961,372.13 = 390,732.53 : x
  2. Step 2: Convert to fraction form
    696,655.56/961,372.13 = 390,732.53/x
  3. Step 3: Cross multiply
    696,655.56x = 961,372.13 × 390,732.53
  4. Step 4: Simplify right side
    696,655.56x = 375,639,364,626.39
  5. Step 5: Solve for x
    x = 375,639,364,626.39/696,655.56
  6. Step 6: Final answer
    x = 539,203.86

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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.