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Finding the Fourth Proportional to 660,040.19, 910,699.35 and 373,560.27

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Solution

The fourth proportional to 660,040.19, 910,699.35 and 373,560.27 is: 515,424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,040.19 : 910,699.35 = 373,560.27 : x
  2. Step 2: Convert to fraction form
    660,040.19/910,699.35 = 373,560.27/x
  3. Step 3: Cross multiply
    660,040.19x = 910,699.35 × 373,560.27
  4. Step 4: Simplify right side
    660,040.19x = 340,201,098,221.86
  5. Step 5: Solve for x
    x = 340,201,098,221.86/660,040.19
  6. Step 6: Final answer
    x = 515,424.82

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Double scale
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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.