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Finding the Fourth Proportional to 539,128.80, 808,984.80 and 223,617.60

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Solution

The fourth proportional to 539,128.80, 808,984.80 and 223,617.60 is: 335,547.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,128.80 : 808,984.80 = 223,617.60 : x
  2. Step 2: Convert to fraction form
    539,128.80/808,984.80 = 223,617.60/x
  3. Step 3: Cross multiply
    539,128.80x = 808,984.80 × 223,617.60
  4. Step 4: Simplify right side
    539,128.80x = 180,903,239,412.48
  5. Step 5: Solve for x
    x = 180,903,239,412.48/539,128.80
  6. Step 6: Final answer
    x = 335,547.35

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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.