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Finding the Fourth Proportional to 70,294,427.60, 105,441,641.40 and 43,084,648.40

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Solution

The fourth proportional to 70,294,427.60, 105,441,641.40 and 43,084,648.40 is: 64,626,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,294,427.60 : 105,441,641.40 = 43,084,648.40 : x
  2. Step 2: Convert to fraction form
    70,294,427.60/105,441,641.40 = 43,084,648.40/x
  3. Step 3: Cross multiply
    70,294,427.60x = 105,441,641.40 × 43,084,648.40
  4. Step 4: Simplify right side
    70,294,427.60x = 4,542,916,046,437,884
  5. Step 5: Solve for x
    x = 4,542,916,046,437,884/70,294,427.60
  6. Step 6: Final answer
    x = 64,626,972.60

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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.