Home / 128,736,698.10-193,105,047.15-47,940,947.70

Finding the Fourth Proportional to 128,736,698.10, 193,105,047.15 and 47,940,947.70

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Solution

The fourth proportional to 128,736,698.10, 193,105,047.15 and 47,940,947.70 is: 71,911,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,736,698.10 : 193,105,047.15 = 47,940,947.70 : x
  2. Step 2: Convert to fraction form
    128,736,698.10/193,105,047.15 = 47,940,947.70/x
  3. Step 3: Cross multiply
    128,736,698.10x = 193,105,047.15 × 47,940,947.70
  4. Step 4: Simplify right side
    128,736,698.10x = 9,257,638,966,024,184
  5. Step 5: Solve for x
    x = 9,257,638,966,024,184/128,736,698.10
  6. Step 6: Final answer
    x = 71,911,421.55

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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.