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Finding the Fourth Proportional to 525,528.57, 788,126.75 and 188,561.69

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Solution

The fourth proportional to 525,528.57, 788,126.75 and 188,561.69 is: 282,782.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,528.57 : 788,126.75 = 188,561.69 : x
  2. Step 2: Convert to fraction form
    525,528.57/788,126.75 = 188,561.69/x
  3. Step 3: Cross multiply
    525,528.57x = 788,126.75 × 188,561.69
  4. Step 4: Simplify right side
    525,528.57x = 148,610,507,030.77
  5. Step 5: Solve for x
    x = 148,610,507,030.77/525,528.57
  6. Step 6: Final answer
    x = 282,782.93

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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.