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Finding the Fourth Proportional to 855,648.96, 1,180,809.60 and 468,457.95

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Solution

The fourth proportional to 855,648.96, 1,180,809.60 and 468,457.95 is: 646,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,648.96 : 1,180,809.60 = 468,457.95 : x
  2. Step 2: Convert to fraction form
    855,648.96/1,180,809.60 = 468,457.95/x
  3. Step 3: Cross multiply
    855,648.96x = 1,180,809.60 × 468,457.95
  4. Step 4: Simplify right side
    855,648.96x = 553,159,644,556.32
  5. Step 5: Solve for x
    x = 553,159,644,556.32/855,648.96
  6. Step 6: Final answer
    x = 646,479.66

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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.