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Finding the Fourth Proportional to 492,710.30, 739,065.45 and 374,612.30

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Solution

The fourth proportional to 492,710.30, 739,065.45 and 374,612.30 is: 561,918.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,710.30 : 739,065.45 = 374,612.30 : x
  2. Step 2: Convert to fraction form
    492,710.30/739,065.45 = 374,612.30/x
  3. Step 3: Cross multiply
    492,710.30x = 739,065.45 × 374,612.30
  4. Step 4: Simplify right side
    492,710.30x = 276,863,008,075.04
  5. Step 5: Solve for x
    x = 276,863,008,075.04/492,710.30
  6. Step 6: Final answer
    x = 561,918.45

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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.