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Finding the Fourth Proportional to 665,179.65, 997,769.48 and 291,931.65

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Solution

The fourth proportional to 665,179.65, 997,769.48 and 291,931.65 is: 437,897.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,179.65 : 997,769.48 = 291,931.65 : x
  2. Step 2: Convert to fraction form
    665,179.65/997,769.48 = 291,931.65/x
  3. Step 3: Cross multiply
    665,179.65x = 997,769.48 × 291,931.65
  4. Step 4: Simplify right side
    665,179.65x = 291,280,489,156.38
  5. Step 5: Solve for x
    x = 291,280,489,156.38/665,179.65
  6. Step 6: Final answer
    x = 437,897.48

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Half scale
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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.