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Finding the Fourth Proportional to 615,706.12, 849,666.12 and 343,778.20

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Solution

The fourth proportional to 615,706.12, 849,666.12 and 343,778.20 is: 474,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,706.12 : 849,666.12 = 343,778.20 : x
  2. Step 2: Convert to fraction form
    615,706.12/849,666.12 = 343,778.20/x
  3. Step 3: Cross multiply
    615,706.12x = 849,666.12 × 343,778.20
  4. Step 4: Simplify right side
    615,706.12x = 292,096,689,334.58
  5. Step 5: Solve for x
    x = 292,096,689,334.58/615,706.12
  6. Step 6: Final answer
    x = 474,409.27

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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.