Home / 128,896,099,407.79-177,868,602,521.40-71,021,240,488.83

Finding the Fourth Proportional to 128,896,099,407.79, 177,868,602,521.40 and 71,021,240,488.83

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Solution

The fourth proportional to 128,896,099,407.79, 177,868,602,521.40 and 71,021,240,488.83 is: 98,004,895,827.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,896,099,407.79 : 177,868,602,521.40 = 71,021,240,488.83 : x
  2. Step 2: Convert to fraction form
    128,896,099,407.79/177,868,602,521.40 = 71,021,240,488.83/x
  3. Step 3: Cross multiply
    128,896,099,407.79x = 177,868,602,521.40 × 71,021,240,488.83
  4. Step 4: Simplify right side
    128,896,099,407.79x = 12,632,448,795,084,463,276,032
  5. Step 5: Solve for x
    x = 12,632,448,795,084,463,276,032/128,896,099,407.79
  6. Step 6: Final answer
    x = 98,004,895,827.91

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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.