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Finding the Fourth Proportional to 638,498.01, 881,166.96 and 352,017.66

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Solution

The fourth proportional to 638,498.01, 881,166.96 and 352,017.66 is: 485,806.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,498.01 : 881,166.96 = 352,017.66 : x
  2. Step 2: Convert to fraction form
    638,498.01/881,166.96 = 352,017.66/x
  3. Step 3: Cross multiply
    638,498.01x = 881,166.96 × 352,017.66
  4. Step 4: Simplify right side
    638,498.01x = 310,186,331,328.51
  5. Step 5: Solve for x
    x = 310,186,331,328.51/638,498.01
  6. Step 6: Final answer
    x = 485,806.26

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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.