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Finding the Fourth Proportional to 210,347,230.80, 314,923,649.40 and 210,347,230.80

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Solution

The fourth proportional to 210,347,230.80, 314,923,649.40 and 210,347,230.80 is: 314,923,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,347,230.80 : 314,923,649.40 = 210,347,230.80 : x
  2. Step 2: Convert to fraction form
    210,347,230.80/314,923,649.40 = 210,347,230.80/x
  3. Step 3: Cross multiply
    210,347,230.80x = 314,923,649.40 × 210,347,230.80
  4. Step 4: Simplify right side
    210,347,230.80x = 66,243,317,564,720,080
  5. Step 5: Solve for x
    x = 66,243,317,564,720,080/210,347,230.80
  6. Step 6: Final answer
    x = 314,923,649.40

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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.