Home / 128,864,289,500.88-177,838,263,574.92-71,771,625,386.16

Finding the Fourth Proportional to 128,864,289,500.88, 177,838,263,574.92 and 71,771,625,386.16

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Solution

The fourth proportional to 128,864,289,500.88, 177,838,263,574.92 and 71,771,625,386.16 is: 99,047,930,827.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,864,289,500.88 : 177,838,263,574.92 = 71,771,625,386.16 : x
  2. Step 2: Convert to fraction form
    128,864,289,500.88/177,838,263,574.92 = 71,771,625,386.16/x
  3. Step 3: Cross multiply
    128,864,289,500.88x = 177,838,263,574.92 × 71,771,625,386.16
  4. Step 4: Simplify right side
    128,864,289,500.88x = 12,763,741,232,624,343,973,888
  5. Step 5: Solve for x
    x = 12,763,741,232,624,343,973,888/128,864,289,500.88
  6. Step 6: Final answer
    x = 99,047,930,827.55

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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.