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Finding the Fourth Proportional to 612,028.10, 918,042.15 and 191,303.30

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Solution

The fourth proportional to 612,028.10, 918,042.15 and 191,303.30 is: 286,954.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,028.10 : 918,042.15 = 191,303.30 : x
  2. Step 2: Convert to fraction form
    612,028.10/918,042.15 = 191,303.30/x
  3. Step 3: Cross multiply
    612,028.10x = 918,042.15 × 191,303.30
  4. Step 4: Simplify right side
    612,028.10x = 175,624,492,834.10
  5. Step 5: Solve for x
    x = 175,624,492,834.10/612,028.10
  6. Step 6: Final answer
    x = 286,954.95

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Double scale
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Similar ratio
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1.5x scale

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.