Home / 128,385,985,295.71-192,547,154,384.42-43,393,890,289.31

Finding the Fourth Proportional to 128,385,985,295.71, 192,547,154,384.42 and 43,393,890,289.31

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Solution

The fourth proportional to 128,385,985,295.71, 192,547,154,384.42 and 43,393,890,289.31 is: 65,080,079,212.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,385,985,295.71 : 192,547,154,384.42 = 43,393,890,289.31 : x
  2. Step 2: Convert to fraction form
    128,385,985,295.71/192,547,154,384.42 = 43,393,890,289.31/x
  3. Step 3: Cross multiply
    128,385,985,295.71x = 192,547,154,384.42 × 43,393,890,289.31
  4. Step 4: Simplify right side
    128,385,985,295.71x = 8,355,370,092,875,394,056,192
  5. Step 5: Solve for x
    x = 8,355,370,092,875,394,056,192/128,385,985,295.71
  6. Step 6: Final answer
    x = 65,080,079,212.93

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1.5x scale

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.