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Finding the Fourth Proportional to 448,810.48, 619,385.16 and 257,818.96

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Solution

The fourth proportional to 448,810.48, 619,385.16 and 257,818.96 is: 355,805.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,810.48 : 619,385.16 = 257,818.96 : x
  2. Step 2: Convert to fraction form
    448,810.48/619,385.16 = 257,818.96/x
  3. Step 3: Cross multiply
    448,810.48x = 619,385.16 × 257,818.96
  4. Step 4: Simplify right side
    448,810.48x = 159,689,237,790.63
  5. Step 5: Solve for x
    x = 159,689,237,790.63/448,810.48
  6. Step 6: Final answer
    x = 355,805.50

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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.