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Finding the Fourth Proportional to 524,057.10, 786,085.65 and 515,309.10

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Solution

The fourth proportional to 524,057.10, 786,085.65 and 515,309.10 is: 772,963.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,057.10 : 786,085.65 = 515,309.10 : x
  2. Step 2: Convert to fraction form
    524,057.10/786,085.65 = 515,309.10/x
  3. Step 3: Cross multiply
    524,057.10x = 786,085.65 × 515,309.10
  4. Step 4: Simplify right side
    524,057.10x = 405,077,088,824.42
  5. Step 5: Solve for x
    x = 405,077,088,824.42/524,057.10
  6. Step 6: Final answer
    x = 772,963.65

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.