Home / 128,862,608.70-177,830,429.04-70,915,856.70

Finding the Fourth Proportional to 128,862,608.70, 177,830,429.04 and 70,915,856.70

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Solution

The fourth proportional to 128,862,608.70, 177,830,429.04 and 70,915,856.70 is: 97,863,898.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,862,608.70 : 177,830,429.04 = 70,915,856.70 : x
  2. Step 2: Convert to fraction form
    128,862,608.70/177,830,429.04 = 70,915,856.70/x
  3. Step 3: Cross multiply
    128,862,608.70x = 177,830,429.04 × 70,915,856.70
  4. Step 4: Simplify right side
    128,862,608.70x = 12,610,997,222,700,158
  5. Step 5: Solve for x
    x = 12,610,997,222,700,158/128,862,608.70
  6. Step 6: Final answer
    x = 97,863,898.22

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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.