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Finding the Fourth Proportional to 434,074.60, 651,111.90 and 276,999.40

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Solution

The fourth proportional to 434,074.60, 651,111.90 and 276,999.40 is: 415,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,074.60 : 651,111.90 = 276,999.40 : x
  2. Step 2: Convert to fraction form
    434,074.60/651,111.90 = 276,999.40/x
  3. Step 3: Cross multiply
    434,074.60x = 651,111.90 × 276,999.40
  4. Step 4: Simplify right side
    434,074.60x = 180,357,605,632.86
  5. Step 5: Solve for x
    x = 180,357,605,632.86/434,074.60
  6. Step 6: Final answer
    x = 415,499.10

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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.