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Finding the Fourth Proportional to 539,095.90, 808,643.85 and 493,606.30

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Solution

The fourth proportional to 539,095.90, 808,643.85 and 493,606.30 is: 740,409.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,095.90 : 808,643.85 = 493,606.30 : x
  2. Step 2: Convert to fraction form
    539,095.90/808,643.85 = 493,606.30/x
  3. Step 3: Cross multiply
    539,095.90x = 808,643.85 × 493,606.30
  4. Step 4: Simplify right side
    539,095.90x = 399,151,698,816.26
  5. Step 5: Solve for x
    x = 399,151,698,816.26/539,095.90
  6. Step 6: Final answer
    x = 740,409.45

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Double scale
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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.