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Finding the Fourth Proportional to 330,319.20, 495,478.80 and 93,669.60

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Solution

The fourth proportional to 330,319.20, 495,478.80 and 93,669.60 is: 140,504.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,319.20 : 495,478.80 = 93,669.60 : x
  2. Step 2: Convert to fraction form
    330,319.20/495,478.80 = 93,669.60/x
  3. Step 3: Cross multiply
    330,319.20x = 495,478.80 × 93,669.60
  4. Step 4: Simplify right side
    330,319.20x = 46,411,301,004.48
  5. Step 5: Solve for x
    x = 46,411,301,004.48/330,319.20
  6. Step 6: Final answer
    x = 140,504.40

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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.