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Finding the Fourth Proportional to 301,117.56, 415,503.95 and 172,064.40

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Solution

The fourth proportional to 301,117.56, 415,503.95 and 172,064.40 is: 237,426.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,117.56 : 415,503.95 = 172,064.40 : x
  2. Step 2: Convert to fraction form
    301,117.56/415,503.95 = 172,064.40/x
  3. Step 3: Cross multiply
    301,117.56x = 415,503.95 × 172,064.40
  4. Step 4: Simplify right side
    301,117.56x = 71,493,436,994.06
  5. Step 5: Solve for x
    x = 71,493,436,994.06/301,117.56
  6. Step 6: Final answer
    x = 237,426.99

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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.