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Finding the Fourth Proportional to 528,036.80, 791,536.80 and 261,838.40

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Solution

The fourth proportional to 528,036.80, 791,536.80 and 261,838.40 is: 392,500.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,036.80 : 791,536.80 = 261,838.40 : x
  2. Step 2: Convert to fraction form
    528,036.80/791,536.80 = 261,838.40/x
  3. Step 3: Cross multiply
    528,036.80x = 791,536.80 × 261,838.40
  4. Step 4: Simplify right side
    528,036.80x = 207,254,729,253.12
  5. Step 5: Solve for x
    x = 207,254,729,253.12/528,036.80
  6. Step 6: Final answer
    x = 392,500.54

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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.