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Finding the Fourth Proportional to 615,626.30, 849,578.56 and 386,193.24

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Solution

The fourth proportional to 615,626.30, 849,578.56 and 386,193.24 is: 532,955.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,626.30 : 849,578.56 = 386,193.24 : x
  2. Step 2: Convert to fraction form
    615,626.30/849,578.56 = 386,193.24/x
  3. Step 3: Cross multiply
    615,626.30x = 849,578.56 × 386,193.24
  4. Step 4: Simplify right side
    615,626.30x = 328,101,496,720.93
  5. Step 5: Solve for x
    x = 328,101,496,720.93/615,626.30
  6. Step 6: Final answer
    x = 532,955.62

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Double scale
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Similar ratio
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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.