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Finding the Fourth Proportional to 448,696.70, 619,429.95 and 346,492.72

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Solution

The fourth proportional to 448,696.70, 619,429.95 and 346,492.72 is: 478,336.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,696.70 : 619,429.95 = 346,492.72 : x
  2. Step 2: Convert to fraction form
    448,696.70/619,429.95 = 346,492.72/x
  3. Step 3: Cross multiply
    448,696.70x = 619,429.95 × 346,492.72
  4. Step 4: Simplify right side
    448,696.70x = 214,627,968,999.25
  5. Step 5: Solve for x
    x = 214,627,968,999.25/448,696.70
  6. Step 6: Final answer
    x = 478,336.41

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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.