Home / 66,112,282.40-99,168,423.60-20,688,000.80

Finding the Fourth Proportional to 66,112,282.40, 99,168,423.60 and 20,688,000.80

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Solution

The fourth proportional to 66,112,282.40, 99,168,423.60 and 20,688,000.80 is: 31,032,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,112,282.40 : 99,168,423.60 = 20,688,000.80 : x
  2. Step 2: Convert to fraction form
    66,112,282.40/99,168,423.60 = 20,688,000.80/x
  3. Step 3: Cross multiply
    66,112,282.40x = 99,168,423.60 × 20,688,000.80
  4. Step 4: Simplify right side
    66,112,282.40x = 2,051,596,426,771,538.75
  5. Step 5: Solve for x
    x = 2,051,596,426,771,538.75/66,112,282.40
  6. Step 6: Final answer
    x = 31,032,001.20

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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.