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Finding the Fourth Proportional to 1,155,788.80, 1,733,688.60 and 407,834.80

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Solution

The fourth proportional to 1,155,788.80, 1,733,688.60 and 407,834.80 is: 611,754.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,788.80 : 1,733,688.60 = 407,834.80 : x
  2. Step 2: Convert to fraction form
    1,155,788.80/1,733,688.60 = 407,834.80/x
  3. Step 3: Cross multiply
    1,155,788.80x = 1,733,688.60 × 407,834.80
  4. Step 4: Simplify right side
    1,155,788.80x = 707,058,543,443.28
  5. Step 5: Solve for x
    x = 707,058,543,443.28/1,155,788.80
  6. Step 6: Final answer
    x = 611,754.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.