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Finding the Fourth Proportional to 516,328.76, 712,542.84 and 286,907.24

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Solution

The fourth proportional to 516,328.76, 712,542.84 and 286,907.24 is: 395,937.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,328.76 : 712,542.84 = 286,907.24 : x
  2. Step 2: Convert to fraction form
    516,328.76/712,542.84 = 286,907.24/x
  3. Step 3: Cross multiply
    516,328.76x = 712,542.84 × 286,907.24
  4. Step 4: Simplify right side
    516,328.76x = 204,433,699,606.16
  5. Step 5: Solve for x
    x = 204,433,699,606.16/516,328.76
  6. Step 6: Final answer
    x = 395,937.08

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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.