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Finding the Fourth Proportional to 685,898.09, 946,597.51 and 380,070.39

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Solution

The fourth proportional to 685,898.09, 946,597.51 and 380,070.39 is: 524,529.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,898.09 : 946,597.51 = 380,070.39 : x
  2. Step 2: Convert to fraction form
    685,898.09/946,597.51 = 380,070.39/x
  3. Step 3: Cross multiply
    685,898.09x = 946,597.51 × 380,070.39
  4. Step 4: Simplify right side
    685,898.09x = 359,773,684,798.73
  5. Step 5: Solve for x
    x = 359,773,684,798.73/685,898.09
  6. Step 6: Final answer
    x = 524,529.36

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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.