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Finding the Fourth Proportional to 519,330.48, 778,995.72 and 125,346.48

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Solution

The fourth proportional to 519,330.48, 778,995.72 and 125,346.48 is: 188,019.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,330.48 : 778,995.72 = 125,346.48 : x
  2. Step 2: Convert to fraction form
    519,330.48/778,995.72 = 125,346.48/x
  3. Step 3: Cross multiply
    519,330.48x = 778,995.72 × 125,346.48
  4. Step 4: Simplify right side
    519,330.48x = 97,644,371,437.07
  5. Step 5: Solve for x
    x = 97,644,371,437.07/519,330.48
  6. Step 6: Final answer
    x = 188,019.72

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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.