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Finding the Fourth Proportional to 525,139.54, 787,750.72 and 258,754.84

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Solution

The fourth proportional to 525,139.54, 787,750.72 and 258,754.84 is: 388,152.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,139.54 : 787,750.72 = 258,754.84 : x
  2. Step 2: Convert to fraction form
    525,139.54/787,750.72 = 258,754.84/x
  3. Step 3: Cross multiply
    525,139.54x = 787,750.72 × 258,754.84
  4. Step 4: Simplify right side
    525,139.54x = 203,834,308,897.22
  5. Step 5: Solve for x
    x = 203,834,308,897.22/525,139.54
  6. Step 6: Final answer
    x = 388,152.66

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1.5x scale

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.