Home / 30,690,050.20-42,349,254-16,938,128.60

Finding the Fourth Proportional to 30,690,050.20, 42,349,254 and 16,938,128.60

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Solution

The fourth proportional to 30,690,050.20, 42,349,254 and 16,938,128.60 is: 23,372,953.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,690,050.20 : 42,349,254 = 16,938,128.60 : x
  2. Step 2: Convert to fraction form
    30,690,050.20/42,349,254 = 16,938,128.60/x
  3. Step 3: Cross multiply
    30,690,050.20x = 42,349,254 × 16,938,128.60
  4. Step 4: Simplify right side
    30,690,050.20x = 717,317,110,366,064.50
  5. Step 5: Solve for x
    x = 717,317,110,366,064.50/30,690,050.20
  6. Step 6: Final answer
    x = 23,372,953.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.