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Finding the Fourth Proportional to 70,012,200.53, 105,018,300.79 and 70,012,200.53

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Solution

The fourth proportional to 70,012,200.53, 105,018,300.79 and 70,012,200.53 is: 105,018,300.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,012,200.53 : 105,018,300.79 = 70,012,200.53 : x
  2. Step 2: Convert to fraction form
    70,012,200.53/105,018,300.79 = 70,012,200.53/x
  3. Step 3: Cross multiply
    70,012,200.53x = 105,018,300.79 × 70,012,200.53
  4. Step 4: Simplify right side
    70,012,200.53x = 7,352,562,333,529,216
  5. Step 5: Solve for x
    x = 7,352,562,333,529,216/70,012,200.53
  6. Step 6: Final answer
    x = 105,018,300.79

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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.