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Finding the Fourth Proportional to 630,248.37, 869,810.12 and 385,376.64

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Solution

The fourth proportional to 630,248.37, 869,810.12 and 385,376.64 is: 531,860.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,248.37 : 869,810.12 = 385,376.64 : x
  2. Step 2: Convert to fraction form
    630,248.37/869,810.12 = 385,376.64/x
  3. Step 3: Cross multiply
    630,248.37x = 869,810.12 × 385,376.64
  4. Step 4: Simplify right side
    630,248.37x = 335,204,501,483.60
  5. Step 5: Solve for x
    x = 335,204,501,483.60/630,248.37
  6. Step 6: Final answer
    x = 531,860.96

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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.