Home / 128,430,550.28-177,234,159.39-69,693,215.40

Finding the Fourth Proportional to 128,430,550.28, 177,234,159.39 and 69,693,215.40

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Solution

The fourth proportional to 128,430,550.28, 177,234,159.39 and 69,693,215.40 is: 96,176,637.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,430,550.28 : 177,234,159.39 = 69,693,215.40 : x
  2. Step 2: Convert to fraction form
    128,430,550.28/177,234,159.39 = 69,693,215.40/x
  3. Step 3: Cross multiply
    128,430,550.28x = 177,234,159.39 × 69,693,215.40
  4. Step 4: Simplify right side
    128,430,550.28x = 12,352,018,446,516,450
  5. Step 5: Solve for x
    x = 12,352,018,446,516,450/128,430,550.28
  6. Step 6: Final answer
    x = 96,176,637.25

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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.