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Finding the Fourth Proportional to 278,417.01, 383,622.01 and 187,615.27

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Solution

The fourth proportional to 278,417.01, 383,622.01 and 187,615.27 is: 258,509.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,417.01 : 383,622.01 = 187,615.27 : x
  2. Step 2: Convert to fraction form
    278,417.01/383,622.01 = 187,615.27/x
  3. Step 3: Cross multiply
    278,417.01x = 383,622.01 × 187,615.27
  4. Step 4: Simplify right side
    278,417.01x = 71,973,346,994.58
  5. Step 5: Solve for x
    x = 71,973,346,994.58/278,417.01
  6. Step 6: Final answer
    x = 258,509.16

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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.