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Finding the Fourth Proportional to 623,678.30, 860,897.25 and 369,028.88

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Solution

The fourth proportional to 623,678.30, 860,897.25 and 369,028.88 is: 509,390.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,678.30 : 860,897.25 = 369,028.88 : x
  2. Step 2: Convert to fraction form
    623,678.30/860,897.25 = 369,028.88/x
  3. Step 3: Cross multiply
    623,678.30x = 860,897.25 × 369,028.88
  4. Step 4: Simplify right side
    623,678.30x = 317,695,943,658.09
  5. Step 5: Solve for x
    x = 317,695,943,658.09/623,678.30
  6. Step 6: Final answer
    x = 509,390.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.