Home / 85,358,813.04-128,038,555.71-20,662,514.19

Finding the Fourth Proportional to 85,358,813.04, 128,038,555.71 and 20,662,514.19

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Solution

The fourth proportional to 85,358,813.04, 128,038,555.71 and 20,662,514.19 is: 30,993,852.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,358,813.04 : 128,038,555.71 = 20,662,514.19 : x
  2. Step 2: Convert to fraction form
    85,358,813.04/128,038,555.71 = 20,662,514.19/x
  3. Step 3: Cross multiply
    85,358,813.04x = 128,038,555.71 × 20,662,514.19
  4. Step 4: Simplify right side
    85,358,813.04x = 2,645,598,474,224,980.50
  5. Step 5: Solve for x
    x = 2,645,598,474,224,980.50/85,358,813.04
  6. Step 6: Final answer
    x = 30,993,852.66

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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.