Home / 85,384,931.40-128,077,397.10-21,559,523.40

Finding the Fourth Proportional to 85,384,931.40, 128,077,397.10 and 21,559,523.40

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Solution

The fourth proportional to 85,384,931.40, 128,077,397.10 and 21,559,523.40 is: 32,339,285.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,384,931.40 : 128,077,397.10 = 21,559,523.40 : x
  2. Step 2: Convert to fraction form
    85,384,931.40/128,077,397.10 = 21,559,523.40/x
  3. Step 3: Cross multiply
    85,384,931.40x = 128,077,397.10 × 21,559,523.40
  4. Step 4: Simplify right side
    85,384,931.40x = 2,761,287,639,788,542
  5. Step 5: Solve for x
    x = 2,761,287,639,788,542/85,384,931.40
  6. Step 6: Final answer
    x = 32,339,285.10

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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.