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Finding the Fourth Proportional to 319,461.10, 479,191.65 and 97,816.30

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Solution

The fourth proportional to 319,461.10, 479,191.65 and 97,816.30 is: 146,724.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,461.10 : 479,191.65 = 97,816.30 : x
  2. Step 2: Convert to fraction form
    319,461.10/479,191.65 = 97,816.30/x
  3. Step 3: Cross multiply
    319,461.10x = 479,191.65 × 97,816.30
  4. Step 4: Simplify right side
    319,461.10x = 46,872,754,193.90
  5. Step 5: Solve for x
    x = 46,872,754,193.90/319,461.10
  6. Step 6: Final answer
    x = 146,724.45

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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.