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Finding the Fourth Proportional to 411,312.20, 616,968.30 and 346,358.30

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Solution

The fourth proportional to 411,312.20, 616,968.30 and 346,358.30 is: 519,537.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,312.20 : 616,968.30 = 346,358.30 : x
  2. Step 2: Convert to fraction form
    411,312.20/616,968.30 = 346,358.30/x
  3. Step 3: Cross multiply
    411,312.20x = 616,968.30 × 346,358.30
  4. Step 4: Simplify right side
    411,312.20x = 213,692,091,541.89
  5. Step 5: Solve for x
    x = 213,692,091,541.89/411,312.20
  6. Step 6: Final answer
    x = 519,537.45

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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.