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Finding the Fourth Proportional to 742,205.70, 1,113,308.55 and 742,205.70

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Solution

The fourth proportional to 742,205.70, 1,113,308.55 and 742,205.70 is: 1,113,308.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,205.70 : 1,113,308.55 = 742,205.70 : x
  2. Step 2: Convert to fraction form
    742,205.70/1,113,308.55 = 742,205.70/x
  3. Step 3: Cross multiply
    742,205.70x = 1,113,308.55 × 742,205.70
  4. Step 4: Simplify right side
    742,205.70x = 826,303,951,668.74
  5. Step 5: Solve for x
    x = 826,303,951,668.74/742,205.70
  6. Step 6: Final answer
    x = 1,113,308.55

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Double scale
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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.