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Finding the Fourth Proportional to 525,907.40, 788,277.90 and 289,419.80

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Solution

The fourth proportional to 525,907.40, 788,277.90 and 289,419.80 is: 433,808.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,907.40 : 788,277.90 = 289,419.80 : x
  2. Step 2: Convert to fraction form
    525,907.40/788,277.90 = 289,419.80/x
  3. Step 3: Cross multiply
    525,907.40x = 788,277.90 × 289,419.80
  4. Step 4: Simplify right side
    525,907.40x = 228,143,232,162.42
  5. Step 5: Solve for x
    x = 228,143,232,162.42/525,907.40
  6. Step 6: Final answer
    x = 433,808.75

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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.