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Finding the Fourth Proportional to 528,098.80, 792,148.20 and 509,436.40

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Solution

The fourth proportional to 528,098.80, 792,148.20 and 509,436.40 is: 764,154.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,098.80 : 792,148.20 = 509,436.40 : x
  2. Step 2: Convert to fraction form
    528,098.80/792,148.20 = 509,436.40/x
  3. Step 3: Cross multiply
    528,098.80x = 792,148.20 × 509,436.40
  4. Step 4: Simplify right side
    528,098.80x = 403,549,127,274.48
  5. Step 5: Solve for x
    x = 403,549,127,274.48/528,098.80
  6. Step 6: Final answer
    x = 764,154.60

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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.