Home / 208,050,153.20-287,000,358.53-128,639,829.63

Finding the Fourth Proportional to 208,050,153.20, 287,000,358.53 and 128,639,829.63

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Solution

The fourth proportional to 208,050,153.20, 287,000,358.53 and 128,639,829.63 is: 177,455,659.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,050,153.20 : 287,000,358.53 = 128,639,829.63 : x
  2. Step 2: Convert to fraction form
    208,050,153.20/287,000,358.53 = 128,639,829.63/x
  3. Step 3: Cross multiply
    208,050,153.20x = 287,000,358.53 × 128,639,829.63
  4. Step 4: Simplify right side
    208,050,153.20x = 36,919,677,225,048,112
  5. Step 5: Solve for x
    x = 36,919,677,225,048,112/208,050,153.20
  6. Step 6: Final answer
    x = 177,455,659.88

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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.