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Finding the Fourth Proportional to 605,621.60, 908,432.40 and 578,065.40

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Solution

The fourth proportional to 605,621.60, 908,432.40 and 578,065.40 is: 867,098.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,621.60 : 908,432.40 = 578,065.40 : x
  2. Step 2: Convert to fraction form
    605,621.60/908,432.40 = 578,065.40/x
  3. Step 3: Cross multiply
    605,621.60x = 908,432.40 × 578,065.40
  4. Step 4: Simplify right side
    605,621.60x = 525,133,338,678.96
  5. Step 5: Solve for x
    x = 525,133,338,678.96/605,621.60
  6. Step 6: Final answer
    x = 867,098.10

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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.