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Finding the Fourth Proportional to 935,356,811.80, 1,311,649,445 and 935,356,811.80

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Solution

The fourth proportional to 935,356,811.80, 1,311,649,445 and 935,356,811.80 is: 1,311,649,445

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,356,811.80 : 1,311,649,445 = 935,356,811.80 : x
  2. Step 2: Convert to fraction form
    935,356,811.80/1,311,649,445 = 935,356,811.80/x
  3. Step 3: Cross multiply
    935,356,811.80x = 1,311,649,445 × 935,356,811.80
  4. Step 4: Simplify right side
    935,356,811.80x = 1,226,860,243,074,439,424
  5. Step 5: Solve for x
    x = 1,226,860,243,074,439,424/935,356,811.80
  6. Step 6: Final answer
    x = 1,311,649,445

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.