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Finding the Fourth Proportional to 407,539.08, 611,341.38 and 154,940.40

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Solution

The fourth proportional to 407,539.08, 611,341.38 and 154,940.40 is: 232,423.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,539.08 : 611,341.38 = 154,940.40 : x
  2. Step 2: Convert to fraction form
    407,539.08/611,341.38 = 154,940.40/x
  3. Step 3: Cross multiply
    407,539.08x = 611,341.38 × 154,940.40
  4. Step 4: Simplify right side
    407,539.08x = 94,721,477,953.75
  5. Step 5: Solve for x
    x = 94,721,477,953.75/407,539.08
  6. Step 6: Final answer
    x = 232,423.05

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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.