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Finding the Fourth Proportional to 448,737.80, 619,486.68 and 346,533.80

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Solution

The fourth proportional to 448,737.80, 619,486.68 and 346,533.80 is: 478,393.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,737.80 : 619,486.68 = 346,533.80 : x
  2. Step 2: Convert to fraction form
    448,737.80/619,486.68 = 346,533.80/x
  3. Step 3: Cross multiply
    448,737.80x = 619,486.68 × 346,533.80
  4. Step 4: Simplify right side
    448,737.80x = 214,673,073,269.78
  5. Step 5: Solve for x
    x = 214,673,073,269.78/448,737.80
  6. Step 6: Final answer
    x = 478,393.11

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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.