Home / 85,385,218.40-128,077,827.60-21,559,810.40

Finding the Fourth Proportional to 85,385,218.40, 128,077,827.60 and 21,559,810.40

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Solution

The fourth proportional to 85,385,218.40, 128,077,827.60 and 21,559,810.40 is: 32,339,715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,385,218.40 : 128,077,827.60 = 21,559,810.40 : x
  2. Step 2: Convert to fraction form
    85,385,218.40/128,077,827.60 = 21,559,810.40/x
  3. Step 3: Cross multiply
    85,385,218.40x = 128,077,827.60 × 21,559,810.40
  4. Step 4: Simplify right side
    85,385,218.40x = 2,761,333,679,499,886.50
  5. Step 5: Solve for x
    x = 2,761,333,679,499,886.50/85,385,218.40
  6. Step 6: Final answer
    x = 32,339,715.60

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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.