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Finding the Fourth Proportional to 604,887.20, 907,330.80 and 415,930.40

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Solution

The fourth proportional to 604,887.20, 907,330.80 and 415,930.40 is: 623,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,887.20 : 907,330.80 = 415,930.40 : x
  2. Step 2: Convert to fraction form
    604,887.20/907,330.80 = 415,930.40/x
  3. Step 3: Cross multiply
    604,887.20x = 907,330.80 × 415,930.40
  4. Step 4: Simplify right side
    604,887.20x = 377,386,462,576.32
  5. Step 5: Solve for x
    x = 377,386,462,576.32/604,887.20
  6. Step 6: Final answer
    x = 623,895.60

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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.