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Finding the Fourth Proportional to 676,545.92, 933,405.92 and 390,059.76

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Solution

The fourth proportional to 676,545.92, 933,405.92 and 390,059.76 is: 538,151.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,545.92 : 933,405.92 = 390,059.76 : x
  2. Step 2: Convert to fraction form
    676,545.92/933,405.92 = 390,059.76/x
  3. Step 3: Cross multiply
    676,545.92x = 933,405.92 × 390,059.76
  4. Step 4: Simplify right side
    676,545.92x = 364,084,089,137.78
  5. Step 5: Solve for x
    x = 364,084,089,137.78/676,545.92
  6. Step 6: Final answer
    x = 538,151.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.