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Finding the Fourth Proportional to 638,503.58, 957,895.53 and 189,259.10

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Solution

The fourth proportional to 638,503.58, 957,895.53 and 189,259.10 is: 283,930.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,503.58 : 957,895.53 = 189,259.10 : x
  2. Step 2: Convert to fraction form
    638,503.58/957,895.53 = 189,259.10/x
  3. Step 3: Cross multiply
    638,503.58x = 957,895.53 × 189,259.10
  4. Step 4: Simplify right side
    638,503.58x = 181,290,445,901.82
  5. Step 5: Solve for x
    x = 181,290,445,901.82/638,503.58
  6. Step 6: Final answer
    x = 283,930.19

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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.