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Finding the Fourth Proportional to 713,135.20, 1,069,443.60 and 358,031.20

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Solution

The fourth proportional to 713,135.20, 1,069,443.60 and 358,031.20 is: 536,916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,135.20 : 1,069,443.60 = 358,031.20 : x
  2. Step 2: Convert to fraction form
    713,135.20/1,069,443.60 = 358,031.20/x
  3. Step 3: Cross multiply
    713,135.20x = 1,069,443.60 × 358,031.20
  4. Step 4: Simplify right side
    713,135.20x = 382,894,175,440.32
  5. Step 5: Solve for x
    x = 382,894,175,440.32/713,135.20
  6. Step 6: Final answer
    x = 536,916.67

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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.