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Finding the Fourth Proportional to 602,036.28, 830,819.70 and 330,129

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Solution

The fourth proportional to 602,036.28, 830,819.70 and 330,129 is: 455,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,036.28 : 830,819.70 = 330,129 : x
  2. Step 2: Convert to fraction form
    602,036.28/830,819.70 = 330,129/x
  3. Step 3: Cross multiply
    602,036.28x = 830,819.70 × 330,129
  4. Step 4: Simplify right side
    602,036.28x = 274,277,676,741.30
  5. Step 5: Solve for x
    x = 274,277,676,741.30/602,036.28
  6. Step 6: Final answer
    x = 455,583.30

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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.