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Finding the Fourth Proportional to 624,195.72, 860,605.86 and 509,357.72

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Solution

The fourth proportional to 624,195.72, 860,605.86 and 509,357.72 is: 702,273.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,195.72 : 860,605.86 = 509,357.72 : x
  2. Step 2: Convert to fraction form
    624,195.72/860,605.86 = 509,357.72/x
  3. Step 3: Cross multiply
    624,195.72x = 860,605.86 × 509,357.72
  4. Step 4: Simplify right side
    624,195.72x = 438,356,237,888.94
  5. Step 5: Solve for x
    x = 438,356,237,888.94/624,195.72
  6. Step 6: Final answer
    x = 702,273.70

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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.