Home / 216,776,529.18-298,925,483.67-128,653,501.37

Finding the Fourth Proportional to 216,776,529.18, 298,925,483.67 and 128,653,501.37

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Solution

The fourth proportional to 216,776,529.18, 298,925,483.67 and 128,653,501.37 is: 177,407,629.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,776,529.18 : 298,925,483.67 = 128,653,501.37 : x
  2. Step 2: Convert to fraction form
    216,776,529.18/298,925,483.67 = 128,653,501.37/x
  3. Step 3: Cross multiply
    216,776,529.18x = 298,925,483.67 × 128,653,501.37
  4. Step 4: Simplify right side
    216,776,529.18x = 38,457,810,121,371,632
  5. Step 5: Solve for x
    x = 38,457,810,121,371,632/216,776,529.18
  6. Step 6: Final answer
    x = 177,407,629.26

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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.