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Finding the Fourth Proportional to 448,735.80, 619,483.92 and 346,531.80

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Solution

The fourth proportional to 448,735.80, 619,483.92 and 346,531.80 is: 478,390.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,735.80 : 619,483.92 = 346,531.80 : x
  2. Step 2: Convert to fraction form
    448,735.80/619,483.92 = 346,531.80/x
  3. Step 3: Cross multiply
    448,735.80x = 619,483.92 × 346,531.80
  4. Step 4: Simplify right side
    448,735.80x = 214,670,877,868.66
  5. Step 5: Solve for x
    x = 214,670,877,868.66/448,735.80
  6. Step 6: Final answer
    x = 478,390.35

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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.