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Finding the Fourth Proportional to 610,466.10, 915,699.15 and 255,443.10

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Solution

The fourth proportional to 610,466.10, 915,699.15 and 255,443.10 is: 383,164.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,466.10 : 915,699.15 = 255,443.10 : x
  2. Step 2: Convert to fraction form
    610,466.10/915,699.15 = 255,443.10/x
  3. Step 3: Cross multiply
    610,466.10x = 915,699.15 × 255,443.10
  4. Step 4: Simplify right side
    610,466.10x = 233,909,029,543.37
  5. Step 5: Solve for x
    x = 233,909,029,543.37/610,466.10
  6. Step 6: Final answer
    x = 383,164.65

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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.