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Finding the Fourth Proportional to 540,670.75, 811,129.14 and 287,818.01

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Solution

The fourth proportional to 540,670.75, 811,129.14 and 287,818.01 is: 431,792.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,670.75 : 811,129.14 = 287,818.01 : x
  2. Step 2: Convert to fraction form
    540,670.75/811,129.14 = 287,818.01/x
  3. Step 3: Cross multiply
    540,670.75x = 811,129.14 × 287,818.01
  4. Step 4: Simplify right side
    540,670.75x = 233,457,573,913.90
  5. Step 5: Solve for x
    x = 233,457,573,913.90/540,670.75
  6. Step 6: Final answer
    x = 431,792.50

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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.