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Finding the Fourth Proportional to 615,865.40, 924,105.30 and 349,830.20

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Solution

The fourth proportional to 615,865.40, 924,105.30 and 349,830.20 is: 524,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,865.40 : 924,105.30 = 349,830.20 : x
  2. Step 2: Convert to fraction form
    615,865.40/924,105.30 = 349,830.20/x
  3. Step 3: Cross multiply
    615,865.40x = 924,105.30 × 349,830.20
  4. Step 4: Simplify right side
    615,865.40x = 323,279,941,920.06
  5. Step 5: Solve for x
    x = 323,279,941,920.06/615,865.40
  6. Step 6: Final answer
    x = 524,919.80

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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.