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Finding the Fourth Proportional to 696,672.36, 961,314.80 and 386,569.80

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Solution

The fourth proportional to 696,672.36, 961,314.80 and 386,569.80 is: 533,414.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,672.36 : 961,314.80 = 386,569.80 : x
  2. Step 2: Convert to fraction form
    696,672.36/961,314.80 = 386,569.80/x
  3. Step 3: Cross multiply
    696,672.36x = 961,314.80 × 386,569.80
  4. Step 4: Simplify right side
    696,672.36x = 371,615,269,973.04
  5. Step 5: Solve for x
    x = 371,615,269,973.04/696,672.36
  6. Step 6: Final answer
    x = 533,414.69

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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.