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Finding the Fourth Proportional to 525,345.66, 786,886.62 and 355,936.50

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Solution

The fourth proportional to 525,345.66, 786,886.62 and 355,936.50 is: 533,137.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,345.66 : 786,886.62 = 355,936.50 : x
  2. Step 2: Convert to fraction form
    525,345.66/786,886.62 = 355,936.50/x
  3. Step 3: Cross multiply
    525,345.66x = 786,886.62 × 355,936.50
  4. Step 4: Simplify right side
    525,345.66x = 280,081,669,419.63
  5. Step 5: Solve for x
    x = 280,081,669,419.63/525,345.66
  6. Step 6: Final answer
    x = 533,137.88

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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.