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Finding the Fourth Proportional to 559,187.74, 771,700.92 and 317,492.83

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Solution

The fourth proportional to 559,187.74, 771,700.92 and 317,492.83 is: 438,152.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,187.74 : 771,700.92 = 317,492.83 : x
  2. Step 2: Convert to fraction form
    559,187.74/771,700.92 = 317,492.83/x
  3. Step 3: Cross multiply
    559,187.74x = 771,700.92 × 317,492.83
  4. Step 4: Simplify right side
    559,187.74x = 245,009,505,145.90
  5. Step 5: Solve for x
    x = 245,009,505,145.90/559,187.74
  6. Step 6: Final answer
    x = 438,152.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.