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Finding the Fourth Proportional to 93,300.45, 128,681.80 and 64,630.93

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Solution

The fourth proportional to 93,300.45, 128,681.80 and 64,630.93 is: 89,140.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,300.45 : 128,681.80 = 64,630.93 : x
  2. Step 2: Convert to fraction form
    93,300.45/128,681.80 = 64,630.93/x
  3. Step 3: Cross multiply
    93,300.45x = 128,681.80 × 64,630.93
  4. Step 4: Simplify right side
    93,300.45x = 8,316,824,084.92
  5. Step 5: Solve for x
    x = 8,316,824,084.92/93,300.45
  6. Step 6: Final answer
    x = 89,140.24

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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.