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Finding the Fourth Proportional to 607,357.90, 911,036.85 and 430,065.10

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Solution

The fourth proportional to 607,357.90, 911,036.85 and 430,065.10 is: 645,097.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,357.90 : 911,036.85 = 430,065.10 : x
  2. Step 2: Convert to fraction form
    607,357.90/911,036.85 = 430,065.10/x
  3. Step 3: Cross multiply
    607,357.90x = 911,036.85 × 430,065.10
  4. Step 4: Simplify right side
    607,357.90x = 391,805,153,998.94
  5. Step 5: Solve for x
    x = 391,805,153,998.94/607,357.90
  6. Step 6: Final answer
    x = 645,097.65

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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.