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Finding the Fourth Proportional to 696,684.27, 961,347.43 and 390,697.68

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Solution

The fourth proportional to 696,684.27, 961,347.43 and 390,697.68 is: 539,119.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,684.27 : 961,347.43 = 390,697.68 : x
  2. Step 2: Convert to fraction form
    696,684.27/961,347.43 = 390,697.68/x
  3. Step 3: Cross multiply
    696,684.27x = 961,347.43 × 390,697.68
  4. Step 4: Simplify right side
    696,684.27x = 375,596,210,574.96
  5. Step 5: Solve for x
    x = 375,596,210,574.96/696,684.27
  6. Step 6: Final answer
    x = 539,119.69

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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.